MULTILAYER FOOD PACKAGING CONTAINING BIODEGRADABLE CELLULOSE FROM AGRICULTURAL WASTE, A GRAPHENE-ENHANCED SENSING LAYER, AND A pH-SENSITIVE FRESHNESS INDICATOR.

Abstract

The invention relates to a multi-layered food packaging designed to detect changes occurring in the food environment during preservation that can be associated with freshness, and to visually evaluate these changes from outside the packaging. Within the scope of the invention, the packaging structure consists of a biodegradable carrier structure containing cellulose derived from agricultural waste, and a sensing and display system integrated within this structure. The sensing system utilizes a graphene-reinforced sensing structure and pH-sensitive elements to detect changes in the food environment that can be associated with freshness. A selectively permeable and separating structure between the food environment and the sensing structure allows controlled access of freshness-related environmental components to the sensing section, while limiting unwanted direct contact between the sensing elements and the food product.The perceived change is transferred from the pH-sensitive change structure to a color-changing indicator structure, creating a visual change related to the freshness of the food. By evaluating the variable freshness indicator and the reference indicator, whose susceptibility to environmental changes is limited, in the same comparison area, the color change can be observed comparatively by the user from outside the packaging. The sensing and indicator elements are integrated within the packaging, creating a sensing side oriented towards the food environment and a visual indicator side oriented towards the external environment. Thus, a multi-layered food packaging is provided where a biodegradable carrier structure derived from agricultural waste is combined with an integrated sensing and indicator system for visually monitoring food freshness.

Description

1 TARIFF BIODEGRADABLE CELLULOSE AND GRAPHENE FROM AGRICULTURAL WASTE. ADDED SENSING LAYER AND pH SENSITIVE MULTI-LAYER FOOD PACKAGING WITH FRESHNESS INDICATOR Technological Field: 5 The invention is used in the preservation and monitoring of freshness of food products. The invention relates to the field of biodegradable and multilayer packaging systems. Specifically, the invention... A cellulose-based biodegradable carrier structure derived from agricultural waste, in food medium. Graphene-enhanced sensing layer for detecting changes and pH 10 A freshness indicator sensitive to changes is integrated within the same packaging structure. It relates to multi-layered food packaging. The invention also describes changes occurring in the food medium due to spoilage. controlled transmission of the food product to the sensing section, the sensing element's interaction with the food product limiting direct contact and the perceived change through color change In terms of being visually traceable from the outside of the packaging; biodegradable packaging 15 technologies, functional food packaging, freshness monitoring systems and agricultural waste It is related to the transformation of packaging structures into value-added products. State of the Art: Physical, chemical and protection from microbiological external influences, preservation of shelf life and consumption 20 Packaging materials with different properties to increase safety. is used. In the current state of the art, plastic-based packaging offers low cost, easy moldability, mechanical strength, and moisture penetration limiting properties. It is widely used for this reason. However, these types of packaging... a significant portion of it is produced from fossil-based raw materials, 25 after use Its long-term presence in nature and increased waste burden, environmental sustainability and waste This creates significant disadvantages in terms of management. In order to reduce these disadvantages, cellulose, starch and similar biological materials are used. Biodegradable packaging materials derived from various sources have been developed. In particular... 30% of cellulosic components found in plant waste resulting from agricultural production Evaluation of the use of renewable resources in packaging material production It is important in terms of increasing and transforming agricultural waste into value-added products. However, a significant portion of known biodegradable packaging is essentially 2 It forms a passive protective structure that isolates the food from external environmental influences, and Monitoring the freshness of the food inside the packaging without opening the packaging. It does not include an integrated perception and sign structure that provides opportunities. Microbial, chemical and other infections occur during the storage of food products. Changes in the properties of the packaging's internal environment as a result of biochemical changes 5 This can occur, particularly with volatile compounds formed during the decomposition process. The acid-basicity changes associated with these factors are used in evaluating the freshness of food. These are among the indicators that can be used. Therefore, not only production and final Instead of evaluating based on the expiration date, the evaluation should be based on the contents of the packaging of the food item. various systems for monitoring changes occurring in the environment 10 It has been improved. In order to determine these changes in the known state of the art Packaging-independent measuring devices, electronic sensors, color change-based indicators and indicator labels placed on the packaging afterwards It can be used. External measuring devices can also be measured by the user. 15 This may require the following: electronic sensor systems, on the other hand, require electronic components and energy. in terms of source, production cost and decomposition of components after use This can create additional requirements. Freshness indicators based on color change reflect the effects of changes in the environment in which the food is kept. the change can be visually observed without the use of an additional electronic reader 20 This allows for the evaluation of these indicators. However, these indicators... in the form of a label separate from the packaging or an added element arrangement; maintaining the position of the indicator on the packaging, external environment Limiting the impact of conditions, necessary interaction between the food environment and the indicator 25 This can create various structural problems in terms of prevention. On the other hand, graphene and graphene-containing functional structures have high specific surface areas. and physical characteristics that enable their use in sensing applications Therefore, it can be evaluated in sensor and packaging technologies. However, The presence of a graphene-enhanced sensing element in a packaging structure alone constitutes a food safety 30 This is not sufficient for reliably monitoring freshness in the food environment. the controlled transmission of the change to the sensing element, perception Limiting unwanted direct contact of the element with food, detection 3 protecting the element from external environmental influences and the user's perception of the change transforming it into a visual representation that can be easily evaluated by is required. In applications where biodegradable packaging structure and freshness indicator are used together. Furthermore, the positions of layers with different functions are preserved relative to each other, and 5 The sensing section is designed so as not to negatively affect the packaging's transport and storage functions. It needs to be fixed inside. The sensing element should not be directly in the food medium. While its explicit positioning may create an unwanted contact risk, completely Insulation, on the other hand, allows the sensing section to detect changes occurring in the food environment. This can limit its access. This situation creates a 10-degree gap between the food environment and the sensing section. This reveals the need for a physical interface that can provide controlled access. It extracts. Furthermore, using an indicator that only changes color, especially when it comes to color change, is problematic. In cases where it happens gradually, the user's awareness of the change that occurs This can make the evaluation more difficult. Therefore, with a variable indicator, 15 creating a fixed visual reference point that can be compared and both indicators The ability for the user to evaluate the freshness status within the same area is easier. It is important because it can be observed in an understandable way. In conclusion, under the current state of the art, a biodegradable carrier derived from agricultural waste is used. the environmental advantages provided by the structure, the changes occurring in the food environment 20 the perception and direct observation of the change by the user when brought together within the same packaging structure, the elements that perform these functions There is a need for integrated solutions that provide a defined physical and layered layout between them. It is located. Specifically, controlled changes in the food environment are detected in the sensing section. 25 transmission, unwanted direct contact of the sensing element with food limiting, protecting the perceptual structure from external environmental influences, perceived making the change visible from outside the packaging and the variable color indicator Biodegradable multilayers that can be compared with a fixed reference indicator. a structural arrangement is needed that can provide together within a packaging structure 30 It is heard. The purpose of the invention: 4 The main objective of the invention is to create a cellulose-based biodegradable carrier structure from agricultural waste; controlled changes occurring in the food environment to the sensing section The permeable structure that allows transmission enables direct contact between the food and the sensing element. limiting separating structure, graphene-doped sensing layer, and pH change-dependent color. 5 within the same packaging body with a freshness indicator that causes the change. The goal is to create an integrated, multi-layered food packaging solution. Another aim of the invention is to utilize cellulosic waste generated as a result of agricultural production. By enabling its evaluation in the carrier structure of packaging, renewable resources and to create a biodegradable packaging structure and to add value to the waste in question to contribute to its transformation into a product. 10 Another aim of the invention is to investigate the spoilage process in food products and the environment inside the packaging. The changes that occur and affect the pH characteristics are due to the selectively permeable interface. by allowing it to reach the sensing section in a controlled manner, freshness The aim is to allow the condition to be perceived within the packaging itself. Another aim of the invention is to create a 15-inch gap between the graphene-enhanced sensing layer and the food product. Thanks to the separating and permeable structure in place, the sensing element interacts with the food product. while limiting unwanted direct contact occurring in the food environment and maintaining freshness. The goal is to enable the perception of changes related to the situation to reach the sensory section. Another objective of the invention is the graphene-enhanced sensing structure, pH-sensitive sensing element, and Arrangement of color-changing indicator elements in a functional relationship with each other 20 Thanks to this, the perceived change in the food environment is visually distinguishable by the user. The goal is to ensure that it is transformed into a change. Another purpose of the invention is to provide an external tool for assessing the freshness of food. electronic reader, separate power supply or user-performed By reducing the need for an additional measurement process, the freshness status can be determined from the packaging. 25 The aim is to enable tracking directly from the packaging before it is opened. Another aim of the invention is to provide a fixed color display with a variable color indicator that undergoes color change. within the same indicator comparison area of ​​the reference color indicator Thanks to its positioning, the color change that occurs can be observed by the user. The aim is to enable comparative and easily distinguishable evaluation. 30 Another objective of the invention is to separate the sensing layer and the freshness indicator structure from the packaging. the need for their use as independent and subsequently added elements by reducing the perception created on the packaging body of the elements in question and The goal is to integrate it into the display module. Another objective of the invention is to integrate the sensing and display module with the packaging structure. its position is maintained through layer fixing and joining elements by providing 5 sensing and display elements during transport, storage and use. The goal is to ensure that their positions relative to each other are maintained. Another aim of the invention is to protect the sensing structure from moisture and external environmental factors. While ensuring protection from physical impacts, the packaging of the color-changing indicator section a protective and visually accessible surface that allows it to be observed from the outside The goal is to create a layered structure. 10 Another objective of the invention is to create a biodegradable carrier layer, a sensing layer, and selective permeability. The interlayer, separator layer, protective layer, and indicator structure are defined by each other. Through its organization within spatial relationships, food preservation and freshness are ensured. monitoring functions within a single multi-layered packaging structure It is to combine. 15 Another objective of the invention is to integrate the sensing and display section into the main packaging body. by enabling it to be positioned in a designated area, in different forms and The aim is to create a structure that can be applied to food packaging produced in various sizes. The invention thus applies not only to a biodegradable packaging material or to materials added to packaging. Beyond establishing an independent freshness indicator; the changes in the food environment 20 the controlled transmission of the food product to the sensing section, the sensing element from the food product physical separation, graphene-doped sensing structure with pH-sensitive color change integration with the indicator and a fixed reference for the visual change that occurs enabling evaluation from outside the packaging by comparison with an indicator. It aims to create an integrated and multi-layered food packaging system. 25 Explanation of the Figures Figure 1: Multilayer food packaging; packaging main body, food storage volume and integrated sensing and display module located on the main body of the packaging It is a perspective view showing the overall structure. Figure 2: Biodegradable carrier layer forming multi-layered food packaging, agricultural waste 30 cellulose-based carrier layer, food contact surface, outer protective surface, food contact separator. layer, selective permeable interlayer, graphene-doped sensing layer, functional layer support layer, sensor protection layer, moisture barrier layer and outer protective layer 6 their relative positions and the relationship they create between the food side and the external environment side This is a cross-sectional view showing a multilayered structure. Figure 3: Structure of the controlled interaction between the food placement volume and the sensing module; sensing transition window, selectively permeable interlayer, selectively permeable micropore structure, volatile compound transmission channel, sensing interaction volume, food contact separator layer, 5 graphene-doped sensing film and pH-sensitive sensing element relative to each other It is a detailed view showing the locations of the objects. Figure 4: Integrated sensing and display module; pH-sensitive change element, freshness indicator layer, color-changing indicator element, reference color indicator, freshness color indicator, indicator comparison area, visual monitoring area, indicator window, indicator 10 including protective window, layer fixing frame and module placement slot. It is a detailed view showing the structure it forms. References: 1. Multilayer food packaging 2. Packaging main body 15 3. Biodegradable carrier layer 4. Cellulose carrier layer derived from agricultural waste. 5. Food contact surface 6. Outer protective surface 7. Food placement volume 20 8. Sensing module 9. Graphene-doped sensing layer 10. Graphene-doped sensitive film 11. pH-sensitive sensing element 12. pH-sensitive change element 25 13. Freshness indicator layer 14. Color-changing indicator element 15. Visual tracking area 16. Indicator window 17. Selectively permeable interlayer 30 18. Selectively permeable microporous structure 19. Volatile compound delivery channel 20. Sensing interaction volume 7 21. Food contact separator layer 22. Sensor protection layer 23. Outer protective layer 24. Moisture barrier layer 25. Functional layer support layer 5 26. Sensing layer carrier surface 27. Indicator layer carrier surface 28th layer bonding surface 29. Environmental sealing line Layer 30 edge link 10 31. Reference color indicator 32. Freshness color indicator 33. Indicator comparison area 34. Detection transition window 35. Indicator protection window 15 36th layer fixing frame 37. Module placement slot 38. Integrated sensing and display module Description of the Invention: The invention relates to the preservation of food products in the food environment inside the packaging for 20 years. changes that occur within the packaging and can be associated with freshness the perception of these changes and their visual impact on the user This relates to multi-layered food packaging (1) which allows for evaluation. layered food packaging (1), packaging of cellulosic raw materials from agricultural waste 25 in the food medium with a biodegradable carrier structure that enables its evaluation in its structure. to perceive changes and to visually represent those changes It is based on the principle of integrated arrangement of functional layers. Multilayer food packaging (1) constitutes the overall form and carrier structure of the packaging. It includes a main packaging body (2) that brings the contents. The main packaging body (2) contains the contents. Depending on the characteristics and intended use of the food product to be produced, different geometric shapes are available. It can be created in various forms. Packaging main body (2); flexible packaging, pouch, bag, a package, container, reservoir, lid, cover or similar structure suitable for food preservation It can be arranged in such a way as to bring. The shape of the main body of the packaging (2) 8 modification of the layered sensing and display structure envisioned within the scope of the invention It does not change the basic operating principle. At least one of the structural components of the main body of the packaging (2) is a biodegradable carrier It forms a biodegradable carrier layer (3). The biodegradable carrier layer (3) forms the physical layer of the packaging. It contributes to the creation of integrity and the other 5 within the packaging. It creates a load-bearing structure that can support functional layers. Biodegradable carrier layer (3) reduces the environmental burden of the packaging after use. from bio-derived materials that can contribute to reduction can be created. Agricultural waste-derived cellulose carrier 10 in relation to biodegradable carrier layer (3) There is a layer (4). The cellulose carrier layer (4) is derived from agricultural waste. cellulosic content resulting from the production or processing of agricultural products cellulose obtained from plant waste is used as a carrier material in packaging. This allows for its evaluation. The cellulosic raw material in question is packaging. processed in such a way as to give it physical properties suitable to its structure, in the form of a layer, film, sheet 15 or it can be transformed into a similar load-bearing structure. Thus, agricultural waste can be used as a base material. The material is used not only as a filler or auxiliary component, but also in multi-layered food. It is considered as one of the structural components of its packaging (1). Food contact surface (5) on the side of the packaging main body (2) facing the food product Food contact surface (5) is located between the food product kept inside the packaging and 20 It forms the inner boundary between the packaging structure and the food contact surface (5). outer protective surface on the side or on the part of the packaging facing the outside environment (6) It is located. The outer protective surface (6) is open to the outside environment of the main body of the packaging (2). It constitutes part of the structure and the physical boundary of the multi-layered structure with the external environment. It constitutes. 25 In the structural arrangement of multilayer food packaging (1), the food contact surface (5) is outside Layer orientation extending towards the protective surface (6) interacting with the food environment elements and user-observed elements are physically separated from each other. It is arranged in a way that allows for separation. Accordingly, it performs the perception function. The elements that bring the food are on the side facing the food placement volume, performing the visual display function. 30 The elements that bring the product can be positioned on the side facing the outer protective surface. This thanks to the orientation, a controlled transfer route of change from the food environment 9 the data is transferred to the sensing section and the sensing result comes into direct contact with the food. This is ensured by providing the user with information from an external observation point that is not involved. Placement and storage of food product inside the main body of the packaging (2) There is a food placement volume (7) for its placement. Food placement volume (7), It also includes the indoor environment surrounding the packaged product. Food 5 biochemical, chemical or microbial infections that occur during storage Changes in the environmental characteristics of food placement volume (7) as a result of the changes This can occur, particularly with volatile compounds associated with the food spoilage process. formation or change in the amount of existing compounds, the environment inside the packaging It can cause changes in acid-basicity characteristics. 10 In multilayer food packaging (1), the environmental changes in question are evaluated. There is a sensing module (8) for food placement. The sensing module (8) detects food placement. Controlled indirect through selective permeable and physical separating structures with volume (7) in a designated part of the main body of the packaging (2) in a way that can enable interaction It is positioned. The detection module (8) must be spread throughout the entire packaging. 15 not being, but being able to be locally configured in a specific section suitable for perception It is possible. Thus, the sensing module (8) can come into direct contact with the food product. while being limited, the perception section of changes related to freshness in the food environment It is ensured that it reaches. One of the basic functional components of the sensing module (8) is graphene-enhanced sensing 20 is the layer (9). The graphene-doped sensing layer (9) has the surface of graphene By taking advantage of its properties, it is sensitive to changes occurring in the food environment. It is designed to support the perceptual structure. Graphene-enhanced. the sensing layer (9) independently of the carrier layers of the packaging with food Instead of being in a free-standing contacting part, it is in multi-layered packaging 25 It is envisioned that it will be kept in a controlled position within its architecture. The graphene-doped sensing layer (9) is functionally related to or within the said layer. It contains graphene-doped sensing film (10). Graphene-doped sensing film (10), Thanks to its thin structure, the sensing module (8) reduces the total thickness of the packaging unnecessarily. It allows for integration into a multi-layered structure without increasing its size. 30 Graphene-doped sensing film (10) suitable physical according to the change in environment to be detected. It can be arranged to have features and the sensing module (8) active It can form one of the sensing surfaces. The sensing module (8) contains a pH sensitive sensing element (11). pH sensitive sensing element (11), occurring in the food placement volume (7) and sensing depending on the changes in the environment transmitted to the module (8) physically or visually It serves to bring about a change that can be evaluated. pH sensitive. It is essential that the sensing element (11) directly measures the pH value of the food itself. 5 not, but rather a reaction that occurs in the packaging environment along with food spoilage and pH It is possible to modify it in a way that will respond to changes affecting its characteristics. pH sensitive change element in functional relationship with pH sensitive sensing element (11) (12) is located. The pH-sensitive change element (12) is located in the sensing section, the medium reaching the sensing section. a change that can be assessed by the indicator structure of the change 10 It contributes to its conversion. pH sensitive change element (12), pH sensitive in the same functional layer as the sensing element (11), in adjacent layers or They can be positioned in such a way that there is a structure to facilitate transfer between them. This graphene-doped sensing layer (9) and graphene-doped sensing film in functional arrangement (10), interaction in the sensing section of the change that comes from the food medium in a controlled manner 15 while creating the surface into which it can enter; pH sensitive sensing element (11) The environmental change sensitive sensing function, pH sensitive change element (12) is the detected It performs an intermediate change function aimed at transferring the change to the indicator system. It brings about the change. The color-changing indicator element (14) informs the user of the change. the display element that is converted into a visible color change by 20 It thus constitutes the functions of perception, transmission of change, and visual representation. through elements that are separated but functionally interconnected is being carried out. In multilayer food packaging (1), the perceived change is visually perceived by the user. There is a freshness indicator layer (13) for evaluation purposes. Freshness 25 The display layer (13) visually displays the change obtained from the sensing module (8) to the user. It is organized in a way that provides information. Freshness indicator layer (13) is an externally observable part of the main body of the packaging (2). They are positioned in a way that corresponds to each other. 30 on the freshness indicator layer (13) or functionally linked to that layer There is a color-changing indicator element (14) in the form of a color-changing indicator. element (14) depends on the change occurring in the pH-sensitive change element (12) It is arranged in a way that will change its visual characteristics. Thus, food placement 11 environmental change occurring in volume (7) and associated with freshness status, This can be transformed into a color change that is observable from outside the packaging. The color-changing indicator element (14) is easily visible to the user. For this purpose, a visual monitoring area (15) is created on the packaging. Visual monitoring area (15) can be visually separated from other parts of the packaging 5 It can be customized and the section where the user will evaluate the display system is physically available. It defines the visual viewing area (15) as the shape, size and packaging. The position of the packaging can be changed depending on its intended use. The display window (16) is associated with the visual viewing area (15). Indicator window (16), freshness indicator layer (13) and color changing indicator 10 It is designed in such a way as to allow the element (14) to be seen from the outside. The display window (16) creates a physical opening in the packaging structure. not necessarily, the outer layer covering the indicator is transparent or allows for visual observation. It can also be created as a single section. In this way, the integrity of the packaging is preserved. It is possible to monitor the color change from the outside. 15 One of the key structural features of the invention is the food placement volume (7) and the sensing module. (8) is to create a controlled interaction between them. For this purpose, a selective permeable interlayer (17) is used. Selective permeable interlayer (17) allows the food product itself or while limiting the access of unwanted solid and liquid components to the sensing module (8), Perception of environmental components that allow assessment of freshness change 20 It is being arranged in a way that will allow passage in that direction. Selective permeable micropores on or within the selective permeable interlayer (17) It has a structure (18). Selective permeable micropore structure (18), food placement Physical control of the transition between volume (7) and sensing module (8) It serves a purpose. The size, density, and distribution characteristics of micropores, 25 depending on the type of food to be treated and the environmental change that is intended to be perceived It can be determined. Thus, the sensing module (8) is completely open to the food environment. Instead of abandoning or completely isolating them, a controlled intermediate interaction is provided. Volatile compounds formed in the food environment and which can be associated with freshness volatile compound transport channel (19) 30 to help transport in the direction of perception It is located. Volatile compound delivery channel (19), selective permeable micropore In a way that will direct the environmental components passing through its structure (18) to the sensing module (8) is formed. The volatile compound transport channel (19) is formed in the form of a single passage. 12 It is possible to create multiple microchannels or distributed pathways. It is also possible to create it in this way. Detection in the section of the volatile compound transmission channel (19) directed to the detection module (8) There is interaction volume (20). The sensing interaction volume (20) is from the food medium. graphene-doped sensing layer (9) of components transferred in a controlled manner, graphene-doped 5 Interaction can occur with the sensitive film (10) and the pH sensitive sensing element (11) It creates a limited internal volume. Creating the perception interaction volume (20), the perceptible environmental components are uncontrollably distributed across all layers of the packaging. This helps to direct the perception to a specific area rather than spreading it. Food contact separator layer between food product and functional sensing elements (21) 10 Food contact separator layer (21), graphene-doped sensing layer (9), graphene-doped sensing film (10) and pH-sensitive sensing element (11) with food product It limits unwanted direct contact. Food contact separator layer (21), Controlled sensing with physical separation by working together with selective permeable interlayer (17) It contributes to the provision of their functions within the same structure. 15 Within the scope of the invention, the controlled sensing function is only possible when the elements in question are the same. not because it is inside the packaging, but because of the food placement volume (7) sensing module (8) is based on establishing a correctly defined sequence of transitions. In this context sensing transition window (34), selective permeable interlayer (17), selective permeable micro pore structure (18), volatile compound delivery channel (19) and sensing interaction volume (20), 20 The sensor module (8) detects changes related to freshness in the food environment in a controlled manner. They are functionally interconnected in a way that allows for their transportation. Food The contact separator layer (21) works in conjunction with the said controlled transition structure, the passage of volatile atmospheric components expected to be evaluated for sensing purposes while enabling functional perception of the solid or liquid components of the food product 25 This restricts direct access to the elements. Thus, the food environment... Instead of a fully open or fully closed connection between the sensing module (8), a transition architecture that provides both physical separation and controlled media transfer. is being created. On the non-food-oriented side of the sensing module (8) or 30 that needs to be protected There is a sensor protection layer (22) on its surface. Sensor protection layer (22), graphene-doped sensing layer (9), graphene-doped sensing film (10) and pH-sensitive the sensing element (11) from the external environment or other layers of the packaging 13 It helps protect against potential mechanical impacts. Sensor protection. layer (22), the location of the sensing module within the packaging and its physical It also contributes to the preservation of its integrity. The outer protective layer of the multilayer food packaging (1) that faces the external environment (23) is located. The outer protective layer (23) is 5 of the outer surface of the main body of the packaging (2). mechanical protection and the protection of the internal functional layers against external environmental influences It serves to preserve the outer protective layer (23), the outer protective surface. (6) can constitute at least one part of it. In relation to the outer protective layer (23), there is a moisture barrier layer (24). Moisture barrier layer (24), especially from the external environment, functional perception and indication of the packaging 10 This contributes to limiting the unwanted environmental moisture transfer that could reach the area. This feature is found in the pH-sensitive sensing element (11) and the color change due to external environmental effects not related to food freshness of the indicator element (14) This is important in terms of limiting the occurrence of unwanted changes. 15 for the purpose of mechanically supporting the functional sensing and display layers There is a functional layer support layer (25). Functional layer support layer (25), sensing and display elements of multilayer food packaging (1) helping to maintain their positions within and the elements in question bending of the packaging, undesirable placement during handling or use It restricts its ability to change. 20 To hold the graphene-doped sensing layer (9) in a specific position, sensing The sensing layer carrier surface (26) is located. The sensing layer carrier surface (26), graphene-doped sensing layer (9) or graphene-doped sensing film (10) It creates a surface on which it can be placed and supported. Sensing layer carrier surface (26), part of functional layer support layer (25) 25 It can be constructed on top of something else, or it can be arranged as a separate supporting element. Indicator layer carrier for supporting the freshness indicator layer (13) There is a surface (27). The indicator layer carrier surface (27) is the freshness indicator. layer (13) and color changing indicator element (14) on the packaging It contributes to the preservation of its position. The indicator layer carrier surface (27), 30 The indicator elements are positioned opposite the indicator window (16) and the user It ensures that it remains visible to them. 14 Layer bonding surfaces (28), physical of materials used in the production of packaging Pressing, lamination, heat bonding, and biodegradable binders according to their specifications. suitable for applying layer integration methods such as merging. It can be created in such a way as to be the basic function of the layer connection surface (28). The layers that perform the tasks have a defined relationship to each other during their service life. The aim is to ensure that they maintain their positions. Thus, the selective permeable interlayer (17) protects food contact separator layer (21), graphene-doped sensing layer (9), sensor protection layer (22), designed between the freshness indicator layer (13) and other functional layers The disruption of the physical sequence is limited. Layer connection surface (28), 10 on the surfaces of adjacent layers facing each other while referring to the superficial integration performed, layer edge link (30) the subject is limiting the separation of layers in the environmental or edge regions It forms the bonding structure. Thus, the layer bonding surface (28) is very the integrity of the layered structure along the surface, layer edge connection (30) It contributes to the mechanical integrity of the layers at their edges. The 15 in question... The two connection structures can be used together in a way that complements each other. Protection of the closed structure of the main body of the packaging (2) and the environment inside the packaging to limit the uncontrolled passage of gases, moisture, or substances between the external environment and the external environment. There is an environmental sealing line (29). Environmental sealing line (29) is the packaging around the main body (2), at the joint edges or in the closure areas 20 It can be created. Environmental sealing line (29), food placement volume (7) while ensuring it is kept closed in a controlled manner, it is specifically designed for detection. the function of the selective permeable interlayer (17) and the sensing transition window (34) It is planned to be arranged in a way that will not cause any obstruction. The presence of an environmental sealing line (29) caused 25 in the food settlement volume (7). It also contributes to limiting the interference of changes with external environmental influences. It is located. In this way, it is possible for environmental changes to reach the sensing module (8). The aim is to ensure that the packaging is as related as possible to the food product inside. In this way... In the sensing system, moisture, gas, or similar effects originating from the external environment The likelihood of an unwanted reaction occurring can be reduced. 30 Layer-edge connection in the edge regions of the layers forming the multilayered structure. (30) is located. Layer edge connection (30), biodegradable carrier layer (3), agricultural waste derived cellulose carrier layer (4), outer protective layer (23), moisture barrier layer (24) and other necessary layers are relative to each other at the edge regions. It contributes to the preservation of their positions. Layer edge link (30), bending, transporting, stacking, opening or closing of the main body of the packaging (2) in a way that will limit the separation of the layers from each other during the process can be created. 5 Layer edge link (30), where the integrated sensing and display module (38) is located in this section, the physical stability of the layers surrounding the module is also maintained. It helps. Thus, the pathways created for perception and the indicator the positions of the system on the packaging may change during use or The separation of the layers from each other is limited. 10 The invention involves the visual assessment of the freshness of food. To facilitate this, there is a reference color indicator (31). Reference color indicator (31) is not affected by changes in pH characteristic of the food medium. or a fixed visual comparison whose susceptibility to such changes is limited. It constitutes the element. The reference color indicator (31) is 15 of the freshness color indicator. (32) evaluation of the initial and change states by the user It is used as a benchmark. In order to preserve the fixed visual characteristic of the reference color indicator (31), the word The subject indicator is the freshness color indicator (32) which interacts with the sensing environment. It can be positioned in a reference region that is physically separated from the main section. 20 The reference color indicator (31) and the freshness color indicator (32) are the same as the user's. Although the reference color can be observed within the indicator comparison area (33) limiting the impact of changes in the food environment on the indicator (31) A protective separation structure can be found. Thus, with a variable display. The visual quality of the reference indicator being compared remains more stable throughout its lifespan. 25 It is ensured that it is kept in place. The reference color indicator (31) is only the absolute color of the freshness indicator. The aim is to reduce the need for interpretation. From the user's perspective, the environment factors such as lighting, packaging storage conditions, or individual color perception In situations where assessing the freshness indicator might be difficult, the same packaging can be used for 30 days. The reference color indicator (31) on it is a visual representation of the freshness color indicator (32). It provides a fixed equivalent by which it can be compared. 16 Freshness color changes visually depending on the changes occurring in the food environment. indicator (32), color-changing indicator element (14) and pH-sensitive change element (12) It is in functional relationship with the freshness color indicator (32), the freshness of the food. the change that occurs in this situation is noticeable to the user as a color or 5 that will allow it to be observed in the form of color tone change It is being organized. The initial color of the freshness color indicator (32) indicates the preservation of the food product. It can represent the initial condition under which it was obtained. Associated with spoilage in the food environment. With increasing changes, the pH sensitive sensing element (11) and pH sensitive change The response generated through element (12) is visual 10 of the freshness color indicator (32). This can cause a change in its properties. This change must be a single-stage process. is not. Depending on the application method, the freshness color indicator (32) has a gradual color gradient. It is also possible to create tonal variations. Reference color indicator (31) and freshness color indicator (32) together In order to evaluate, there is an indicator comparison area (33). Indicator 15 comparison area (33), reference color indicator (31) and freshness color indicator (32) so that it can be evaluated by the user within the same field of view It positions the colors in different parts of the packaging so that the user can distinguish them. Instead of evaluating them separately, fixed and variable indicators are directly compared with each other. It is possible to make a comparison. 20 Indicator comparison area (33), freshness color with reference color indicator (31). It can be formed by placing the indicator (32) side by side, as well as by placing an indicator where one surrounds the other, the indicators are formed in adjacent sections, or in another geometric arrangement that allows for direct visual comparison It can be created. The basic function of the indicator comparison area (33) is perception 25 the result can be evaluated more easily and consistently by the user to contribute. The structural arrangement of the indicator comparison area (33) is the reference color the freshness color indicator (31) and the freshness color indicator (32) only on the same packaging Unlike the presence of both indicators simultaneously and in close proximity, visual 30 It allows comparison under the conditions. With the reference color indicator (31) freshness color indicator (32) within adjacent or shared visual field Thanks to its positioning, the effect of ambient lighting on both indicators 17 can be made similar and the change in the freshness color indicator (32) It can be more easily distinguished according to the fixed reference color indicator (31). Thus the indicator comparison area (33) is a surface that only carries the indicators. not, but the perceived change in freshness is comparatively observed by the user. It creates a functional packaging section that allows for evaluation. 5 Controlled environment transition between food placement volume (7) and sensing module (8) There is a sensing transition window (34) for providing sensing. The passage window (34) is located on the side facing the food storage volume (7) and selective permeable interlayer (17), selective permeable micropore structure (18) and volatile It is functionally related to the compound conduction channel (19). 10 The sensing transition window (34) must create an open gap in the packaging. It is not. The window in question is covered with a layer that exhibits selective permeability. or in the form of a limited transition surface containing micropores It can be formed. Thus, solid or liquid food located in the food storage volume (7) While the direct access of its components to the sensing module (8) is restricted, freshness 15 It becomes possible to transmit associated volatile atmospheric components in the direction of detection. is being brought. The size and location of the sensing passage window (34) are kept inside the packaging. This can be changed depending on the type of food to be consumed. For example, the composition of the food product. Detection transition 20, taking into account the area where volatile compounds accumulate within the packaging. window (34) corresponds to the top, side or other suitable part of the food placement volume (7). It can be positioned in such a way as to come into contact with the sensing module (8) packaging. This allows for a more informed assessment of the changes within the organization. To protect the display system from physical impacts from the external environment. There is an instrument protection window (35). The instrument protection window (35) is 25 with the display window (16), visual monitoring area (15) and display comparison area (33) They are positioned opposite each other. The indicator protection window (35) allows the user to freshen up. while allowing the indicator to be seen from the outside, the indicator elements can be directly accessed manually. Helps protect against external influences such as contact, friction, liquid contact, or similar factors. is. 30 The indicator protection window (35) is made of biodegradable material that allows transparent or visual observation. It can be created in the form of a layer. The indicator protection window (35) indicator Physical contact with the system is not necessary; it is between the indicator and the protective window. 18 It is also possible to create a limited space. This allows the color of the indicator system to be adjusted. preserving the necessary physical conditions for the change to take place It can be provided. Functional perception and indicator elements are defined in relation to each other. There is a layer fixing frame (36) to maintain their positions. 5 Layer fixing frame (36), sensing module (8), freshness indicator layer (13), indicator window (16), detection switch window (34), indicator protection will support the window (35) and its associated layers environmentally or partially It can be arranged in this way. Layer fixing frame (36), especially for the integrated sensing and display module 10 (38) Deformation of the main body of the packaging (2) or layers due to stretching It serves to reduce the risk of a change in the relative position between them. Layer It is not necessary for the fixing frame (36) to form a completely rigid structure, also as a semi-flexible or flexible frame that preserves the flexibility of the packaging to a certain extent It is possible to modify it. 15 The integrated sensing and display structure on the main body of the packaging (2) has a specific Module placement slot (37) to enable placement in the position It is located. Module placement slot (37), layers of packaging main body (2) It can be organized in the form of a limited settlement area created between them. (The word...) The subject is the production of the housing, integrated sensing and display module (38) packaging 20 placement at the location determined during the phase and throughout the period of use It ensures the protection of the position. Module placement slot (37), packaging of integrated sensing and display module (38) to create an unwanted protrusion outwards or into the food placement volume (7) It can be configured to limit uncontrolled overflow. Thus, 25 integration of the sensing and display system with the overall geometry of the packaging is provided. The shape and size of the module placement slot (37), integrated sensing and display. It can be created in accordance with the geometry of the module (38). Round, oval, It is possible to use quadrilaterals or other suitable geometric shapes. Module 30 Changing the geometry of the insertion slot (37) changes the basic working principle of the invention. It does not change anything. 19 Module mounting slot (37) of the integrated sensing and display module (38) its positioning inside the module's packaging main body (2) only not the retention, but the preservation of the perception side and the signifier side in the correct orientation. It also enables layer fixing with module placement slot (37). frame (36), complementary environmental or partial boundary surfaces 5 It can be configured to have integrated sensing and display. the module (38) rotating, sliding or between the packing layers during use Unwanted displacement can be restricted. The physical aspect in question... The limitation also applies to the food placement volume (7) of the sensing transition window (34), indicator the position of the protective window (35) is oriented towards the outer protective surface (6) 10 It contributes to its preservation. The invention combines sensing and visual display functions into a single functional structure. integrated sensing and display module (38) for the purpose of bringing together within it It is located. The integrated sensing and display module (38) monitors the food environment. From receiving the change to creating the visual result that the user can observe, 15 limited on the main body of the packaging (2) of the functional chain extending to This makes it possible to carry out the project in the region. Integrated sensing and display module (38); sensing module (8), graphene-doped sensing layer (9), graphene-doped sensing film (10), pH-sensitive sensing element (11), pH-sensitive change element (12), freshness indicator layer (13), color-changing indicator 20 element (14), reference color indicator (31), freshness color indicator (32) and indicator It brings together the field of comparison (33) in a functional relationship. The integrated sensing and display module (38) is directed towards the food placement volume (7). sensing transition window (34), selective permeable interlayer (17), selective permeable micropore structure (18), volatile compound delivery channel (19), sensing interaction volume (20) 25 and food contact separator layer (21). These elements are food the controlled transmission of changes related to the freshness of the environment to the sensing section It forms the transition and interaction structure. On the side of the module facing the external environment freshness indicator layer (13), indicator window (16) and indicator protection window (35) is available. Thanks to this arrangement, the integrated sensing and display module has 30 (38) one side interacts with the food environment in a controlled manner, and the other side It allows the user to visually evaluate it. Integrated sensing and display module (38) inside module mounting slot (37) is positioned and physically secured via the layer fixing frame (36) is supported. Functional layer support layer (25), sensing layer carrier The surface (26) and the indicator layer carrier surface (27) are the sensing and It helps the indicator layers maintain their positions. 5 The invention's operating principle involves the packaging of the food product intended for preservation. The food placement volume (7) of the main body of the packaging (2) is placed in the food placement volume (7). After the relevant open parts are closed, the circumferential sealing line (29) and layer edge With the help of connection (30), the packaging interior environment is protected from uncontrolled external environmental effects Separation is ensured. 10 In the initial state when the food product is fresh, the pH sensitive sensing element (11) detects pH sensitive change element (12), color change indicator element (14) and freshness color Indicator (32) is in the initial visual state. Reference color indicator (31) a constant comparison for the evaluation of the freshness color indicator (32) It provides value. 15 As food storage time increases, microbial, biochemical, or chemical problems may develop in the product. Changes can occur. As a result of these changes, the food storage volume (7) Changes may occur in the quality or quantity of volatile compounds within it. The acidity-basicity characteristics of the packaging environment may be affected. Volatile compounds associated with the change in food settlement volume (7) 20 It reaches the detection transition window (34). The volatile compounds detection module (8) The transition is not achieved through direct open contact; a selectively permeable intermediate layer is used. (17) and controlled via selective permeable micropore structure (18) is being brought. Volatile medium components passing through the selectively permeable micropore structure (18) are volatile 25 The volatile compound is directed to the conduction channel (19). The volatile compound conduction channel (19) is called The subject carries the components into the perception interaction volume (20). Thus, food The components necessary for detecting changes occurring in the environment are included throughout the packaging. Instead of spreading uncontrollably through layers, it follows a defined pathway. It is transmitted to the sensing module (8). 30 Food contact separator layer (21) protects the food product itself or the food during this transfer. the graphene-doped sensing layer (9) of the liquid and solid components belonging to the graphene-doped sensing layer It limits direct contact with the film (10) and the pH-sensitive sensing element (11). 21 In this way, controlled gas or volatile compound interaction and physical food contact are separated. They are leaving. The ambient components reaching the sensing interaction volume (20) graphene-doped sensing layer (9) and interacts with graphene-doped sensitized film (10). The graphene-doped structure By taking advantage of its high surface area, detectable environmental changes are pH-sensitive. 5 Transfer to the sensing element (11) is supported. Changes occurring in the pH-sensitive sensing element (11) are pH-sensitive changes. The pH-sensitive change is transmitted to element (12). Element (12) detects the environment. visual change which can be assessed by the freshness indicator layer (13) It transfers the process. As a result of this functional transfer, the color-changing indicator 10 The visual feature of element (14) is changing. The change occurring in the color-changing indicator element (14) affects the visual viewing area. (15) becomes observable in the freshness color indicator (32). Freshness via the user display window (16) and the display protection window (35) can observe the color indicator (32). 15 Freshness color indicator (32) and reference color indicator (31), indicator comparison area (33) are included together. The user has a variable freshness color its indicator (32) directly with the fixed reference color indicator (31) by comparing the visual changes related to the freshness of the food inside the packaging. can evaluate. 20 In this method of study, the packaging is visually assessed for freshness. Opening is not mandatory. Color changing indicator element (14), freshness color indicator (32) and the basic visualization performed via the reference color indicator (31). evaluation, external electronic reader, battery or separate electrical power This can be done without using the source. Thus, 25 regarding freshness status. Basic user information: passive visual display structure within the packaging. This can be provided through [the website / platform]. One of the key technical features of the invention is the relationship between the food medium and the sensing system. the relationship is based on controlled permeability rather than a completely open or completely closed structure It is arranged according to the following. Leaving the sensing module (8) completely open to the food environment 30 In this situation, there may be a risk of direct contact between the sensing elements and the food. If the sensing module is completely isolated, then the environment related to freshness... The changes can be prevented from reaching the sensing element. 22 Therefore, selective permeable interlayer (17), selective permeable micropore structure (18), volatile compound transmission channel (19), sensing interaction volume (20), food contact separator layer (21) and sensing transition window (34) are functionally related to each other. It works by creating a physical connection between the food product and the sensing system. 5 Enables the continuation of necessary environmental interaction for perception while providing separation. This creates a controlled access architecture. Another important feature of the invention is the combination of the sensing function and the visual display function. Not as two separate elements independent of the packaging, but as integrated sensing and display. The module (38) is assembled within it. Thanks to this structure, the sensing module (8) 10 to transmit the change assessed by the freshness indicator layer (13) The need to use an additional link or separate indicator label besides the packaging. is being reduced. Biodegradable carrier layer (3) and agricultural waste-derived cellulose carrier layer (4) The physical relationship can be altered according to different application methods. In one application Agricultural waste-derived cellulose carrier layer (4), biodegradable carrier layer (3) main 15 It can form a structure. In another application, the two structures are adjacent to each other. They can be arranged as separate layers. To be used in obtaining the cellulose carrier layer (4) from agricultural waste. agricultural waste type, depending on regional agricultural production and available cellulosic raw materials. It can be modified. The basic structural principle of the invention is based on a specific type of agricultural waste. It is not restricted. The main point is that the amount of cellulosic material originating from agricultural waste is very high. It is the inclusion of layered food packaging into the carrier structure (1). Biodegradable carrier layer (3) and cellulose carrier layer of agricultural waste origin (4) Their thickness, mechanical strength, and flexibility properties depend on the type of product to be packaged. This can be determined. For example, in flexible packaging applications, a thinner and more flexible 25 While load-bearing structures are preferable, higher costs are observed in container or semi-rigid packaging applications. A load-bearing structure that provides structural strength can be used. Graphene-doped sensing layer (9) and graphene-doped sensing film (10) are also different. In applications, they can be created in different physical forms. Graphene-doped sensitive materials. The film (10) can be created on the surface of the graphene-doped sensing layer (9), as mentioned 30 The subject is separate from the perceptual layer but in contact with or in close proximity to it. It can also be arranged as a thin functional layer. 23 It is essential that the graphene-doped sensing layer (9) is spread over the entire surface of the packaging. It is not. The sensing layer is only in the limited area where the sensing module (8) is located. By creating it, it becomes possible to reduce the amount of functional material required. This can be achieved. Such a local settlement, with its perceptual function, and the overall carrier of the packaging... It also makes it easier to separate their functions. 5 The pH-sensitive sensing element (11) and the pH-sensitive change element (12) have the same functional either integrated within the structure or as separate components adjacent to each other. It can be created. Similarly, color change can be achieved with pH-sensitive change element (12). the creation of the indicator element (14) together on a single functional film or It is possible to arrange them as separate, interconnected layers. 10 The use of these structures enables the invention to be applied to different production methods and different foods. This allows the products to adapt to the environmental changes they create. However, in all applications, the detection of changes occurring in the food environment is crucial. There is a functional aspect between creating a color change visible to the user. A link is available. 15 The pore size, distribution and density of the selective permeable micropore structure (18) It can be adjusted according to the type of food to be used. The pore structure determines whether the food is liquid or not. It restricts the passage of solid components while allowing the passage of volatile medium components. They can be selected according to their suitability. Formation of a volatile compound transmission channel (19) in the form of a single linear channel 20 It is not mandatory. Multiple channels, branching pathways, or micro-path networks. It can be used. This structure is the environment received from the sensing transition window (34). help to transmit the components to the sensing interaction volume (20) in a more balanced way. It is possible. The geometry of the sensing interaction volume (20) also depends on the sensing sensitivity and the packaging 25 It can be changed according to its size. Sensing interaction volume (20), graphene-doped The film in question can be created only along one surface of the sensitive film (10). It can also be arranged in the form of a partially surrounding volume. The sensor protection layer (22) provides additional mechanical protection for the sensing module (8). 30 unwanted influences from the external environment that may affect the perception result It helps to limit the moisture barrier with the sensor protection layer (22). Thanks to the use of the layer (24) together, the external environment of the sensing section Its protection against these conditions can be strengthened. 24 The outer protective layer (23) and the moisture barrier layer (24) are in separate layers. It can be created as a combined protective structure that performs both functions simultaneously. It can also be implemented in this form. However, in a multi-layered structure, this Defining functions through separate layers, different packaging requirements According to this, the barrier and mechanical protection features can be adjusted independently. 5 It provides an opportunity. The moisture barrier layer (24) is controlled between the food medium and the sensing module (8). It is important that it does not obstruct the permeability pathway. Therefore, a moisture barrier layer is necessary. (24) while being positioned mainly on the external environment side, selective permeable interlayer (17) It is located in the controlled transit zone on the food side. Thus, 10 from the outside. The necessary environment for internal sensing by limiting unwanted moisture penetration. The transition is facilitated by different methods. In this context, selective permeable intermediate layers are used. (17) and the moisture barrier layer (24), two barriers that prevent the passage of matter in the same direction. not as a packaging material, but as a functional element that controls different environmental effects on different sides of the packaging. They are arranged as layers. Selectively permeable interlayer (17), food placement 15 from volume (7) to sensing module (8) freshness related volatile ambient components while allowing controlled passage, the moisture barrier layer (24) outer protective surface (6) Undesirable environmental humidity that may come from this direction and affect the sensing result It restricts the passage of information. Thus, the internal environmental interaction necessary for perception is limited. While protected, external environmental disruptive effects on the sensing and display elements are 20 Access is being reduced. Functional layer support layer (25), especially of multilayer food packaging (1) In applications where the sensing and display elements are created in a flexible structure It helps maintain physical stability. Sensing layer carrier surface (26) and indicator layer carrier surface (27), functional layer support 25 It can be formed on different faces or different parts of the layer (25). Thanks to the arrangement, the graphene-doped sensing layer (9) is oriented toward the food medium. When positioned closer, the freshness indicator layer (13) is placed on the outside of the packaging. It can be positioned closer to the side. Thus, the sensing and display functions A physical distinction is created between them based on layer orientation. 30 Functional layer support layer (25), sensing layer carrier surface (26) and In this orientation, the indicator layer carrier surface (27) is the perception and indicator. their systems in two physically separated but functionally connected parts It ensures the arrangement of the food placement on the carrier surface (26) of the sensing layer. In the section directed toward its volume (7), the outer protection of the indicator layer carrier surface (27) is graphene-doped sensing layer (9) thanks to its location in the section facing the surface (6) with support of the freshness indicator layer (13) in accordance with different physical conditions It is possible. The functional layer support layer (25) is 5 of the surfaces in question. Bending the packaging helps maintain their relative positions to each other. The design between the sensing and display system during transport or use It limits the disruption of the layer relationship. The indicator protection window (35) is integrated with the outer protective layer (23). It can be formed as a separate transparent protective layer or as a separate layer. 10 It is applicable. The indicator window (16) and the indicator protection window (35) are the same. thanks to its positioning in the direction of the freshness indicator layer (13) A visual communication link is established between them. The dimensions of the reference color indicator (31) and the freshness color indicator (32) are compared with each other. They don't have to be the same. However, the two indicators can easily be 15. In order to be compared, the indicators must be visually compared with each other within the comparison area (33). They are preferably arranged in a way that will create a relationship. In one application, the reference color indicator (31) is a single constant corresponding to the fresh condition. It can be caused by color. In another application, it can be used to achieve different levels of freshness. Creating multiple reference color spaces that provide visual equivalents 20 It is possible. In this case, the change in the freshness color indicator (32) is sudden. It can be compared with a fixed reference value. Within the scope of this invention, the term "freshness indicator" refers only to food that is completely fresh or as a structure intended to show two completely degraded extreme states It is not being evaluated. The indicator system depends on the progress of change in the food environment. 25 in a way that will allow intermediate states to be visually distinguished It can be edited. However, the working principle of the invention must necessarily depend on a specific color sequence. It is not. The pH-sensitive change element (12) and color-changing indicator to be used. The starting and changing colors differ according to the characteristics of the element (14) 30 It can show. The main feature is the freshness color indicator (32) in the food medium. its visual characteristics change in relation to the change that has occurred and the aforementioned The change can be evaluated with the help of a reference color indicator (31). 26 The invention’s integrated sensing and display module (38) is used to package the main unit during production. It can be permanently integrated into the body (2). Thus, the packaging can be later Instead of a separate label applied to it, it is placed between the layers of the packaging structure. or obtain a functional structure held in a designated module placement slot (37) is being done. 5 The integrated sensing and display module (38) is integrated with the packaging, the module This helps to maintain the position indicated on the packaging during use. In addition, the sensing transition window (34) is on the food side, the indicator protection window (35) However, by directing it towards the user side, the module's orientation changes during production. It can be determined at this stage. 10 Layer fixing frame (36) and module placement slot (37), integrated sensing and allows the indicator module (38) to be placed only in the specified orientation. It can include complementary geometric guiding surfaces. This guiding Thanks to their surfaces, the sensing side of the module is positioned within the food placement volume during production. (7), the visual indicator side is directed towards the outer protective surface (6) 15 This simplifies the process and reduces the possibility of incorrect placement. In the application of the invention, the main body of the packaging (2) is flexible, semi-rigid or rigid in structure. The sections can be found. Integrated sensing and display module (38) location, in the part of the packaging that is not excessively folded or that is easily visible to the user By selecting this option, the readability of the display system can be improved. 20 Multilayer food packaging (1) can be applied to single-use food packaging. With appropriate structural arrangements, it can also be used in different containment systems. Modifying the overall packaging design, controlled permeability detection, and comparative analysis. It does not change its working principle, which is based on color representation. Within the scope of the invention, a biodegradable carrier layer (3), a cellulose carrier of agricultural waste origin 25 layer (4), outer protective layer (23), moisture barrier layer (24) and other supporting layers the layers are also made of biodegradable or environmentally friendly materials This is preferable. In this way, not only the main carrier structure but also the packaging is more efficient. It is possible to make a large portion of it biodegradable. The quantity and arrangement of graphene-doped functional structures used in the invention, packaging size 30 limited in a way that does not eliminate the essential character of the biodegradable carrier structure. It can be adjusted in the sensing area. The sensing module (8) locally Its creation provides an advantage in this respect as well. 27 In the production of the multilayer structure, biodegradable carrier layer (3) and agricultural waste The source cellulose carrier layer (4) will first form the carrier body It can be prepared. Then the functional layer is placed on the support layer (25). sensing layer carrier surface (26) and display layer carrier surface (27) by creating and supporting the perception and display components in specified locations 5 It can be provided. Graphene-doped sensing layer (9), graphene-doped sensing film (10), pH-sensitive sensing element (11) and pH-sensitive change element (12) will form the sensing side while being arranged; freshness indicator layer (13), color changing indicator element (14), Reference color indicator (31) and freshness color indicator (32) user-side visual 10 It forms the indicator structure. On the sensing side, sensing transition window (34), selective permeable interlayer (17), selective permeable micropore structure (18), volatile compound transmission channel (19), sensing interaction volume (20) and food contact separator layer (21), sensing from food placement volume (7) by placing it in such a way as to create a controlled passage route to the module (8) 15 A controlled interaction zone is created. In this arrangement, the volatile compound transmission channel (19), medium passing through selective permeable micropore structure (18) directing its components to the perception interaction volume (20) and the volume in question The limited sensing region where the graphene-enhanced sensing structure interacts with a controlled environment. It constitutes. 20 These layers are connected to each other via layer connection surfaces (28). integrated, integrated sensing and display module (38) module placement It is placed in its housing (37) and the necessary physical with the layer fixing frame (36) Support is provided. Layer edge connection (30) and circumferential sealing line (29) The overall physical integrity of the main body of the packaging (2) is completed with this. 25 In this arrangement, each layer performs only an independent function. It does not remain, but works in a way that completes the tasks of the neighboring layers. Food contact separator layer (21) selectively permeable while separating the sensing element from the food Layer (17) allows the necessary medium passage for sensing. Sensor protection layer (22) protects the sensing structure while sensing transition window (34) on the food side 30 It ensures the continuation of controlled interaction. Outer protective layer (23) and moisture barrier layer (24) limits external influences while indicator protection window (35) provides visual monitoring. It enables its continuation. 28 Thus, the invention's multi-layered structure combines protection and sensing, and permeability and separation. and different requirements such as visual access and protection from the external environment are the same. It is balanced within the packaging structure. In the technical structure of the invention, the food placement volume (7) observed by the user There is a specific functional transmission chain that extends to the indicator. This chain, food 5 It starts with the change in the environment reaching the perception transition window (34); selective permeable interlayer (17), selective permeable micropore structure (18), volatile compound transmission It continues through channel (19) and perception interaction volume (20). The change reaching the sensing interaction volume (20) graphene-doped sensing layer (9), 10 via graphene-doped sensing film (10) and pH-sensitive sensing element (11) detected; color change indicator via pH sensitive change element (12) is transferred to the element (14) and the result is visually displayed in the freshness color indicator (32). It is emerging. The visual change occurring in the freshness color indicator (32) is compared with the reference color indicator. (31) is compared within the indicator comparison area (33) and user 15 through the indicator window (16) and the indicator protection window (35) This is being observed. A key feature of this functional chain is that the changes occurring in the food environment are electronically transmitted. without the need for a measurement circuit, the physical and functional properties of the packaging itself This allows the information to be transferred to the user through its layers. Thus, the packaging is not only for food 20 By transforming the product from a passive structure that isolates it from environmental influences into a state of freshness... It is transformed into a functional structure that provides related visual information. The invention also makes the use of cellulosic raw materials derived from agricultural waste environmentally friendly. not as a beneficial additive, but as a carrier structure of the packaging It envisages its evaluation as a functional component. Agricultural waste 25 The cellulose carrier layer (4) of multilayer food packaging (1) mechanical and It is included in the structural architecture. The graphene-doped sensing layer (9) is also a standalone sensor element used alone. It does not have a selectively permeable transition structure, a pH-sensitive sensing structure, and a visual indicator. The integrated sensing and display module (38) together with the system is a functional 30 It forms part of it. As a result, the multilayer food packaging (1) created within the scope of the invention, agricultural waste provided by the biodegradable carrier layer (3) containing cellulose carrier layer (4) 29 On the structural basis, freshness associated with food placement volume (7) occurs. transmitting the changes to the module (8) in a controlled manner; graphene-doped sensing layer (9), graphene-doped sensing film (10), pH-sensitive sensing element (11) and detects these changes through the pH-sensitive change element (12) and It makes it visual via the color-changing indicator element (14). 5 Selective permeable interlayer (17) on the sensing side, selective permeable micropore structure (18), volatile compound transmission channel (19), sensing interaction volume (20), food contact separator Controlled medium transfer thanks to layer (21) and sensing transition window (34) while being formed; outer protective layer (23), moisture barrier layer (24), indicator on the outside Protected visual monitoring with the help of the window (16) and the indicator protection window (35) 10 is provided. Comparison of freshness color indicator (32) with reference color indicator (31) the arrangement together within area (33) the color change that occurs user This allows for direct comparison and evaluation. Functional layer support layer (25), sensing layer carrier surface (26), indicator 15 layer carrier surface (27), layer bonding surface (28), circumferential sealing line (29), layer edge connection (30), layer fixing frame (36) and module placement The housing (37) is the position determined within the packaging of the functional structure in question. and supports maintaining its physical integrity. In this context, the technical core of the invention is a biodegradable carrier 20 derived from agricultural waste. The structure can be used alone or with a graphene-enhanced sensing element for color change. limited to an indicator being present independently within the packaging. It is not. The technical structure provides a controlled transition from the food environment to the sensing section. layers that provide physical separation between food and functional sensory elements the structure, graphene-doped sensing and pH-sensitive change elements, externally 25 observable color-changing indicator system and comparison with a fixed reference. The indicator area that enables this is defined within the same multi-layered packaging architecture. It is based on bringing together positional and functional relationships. The aforementioned Through these relationships, food preservation and the controlled management of environmental changes related to freshness are possible. 30 It is possible to perform their functions within a single main packaging body (2). is happening. Thus, the integrated sensing and display module (38) controls the food-oriented packaging. with its controlled sensing structure on one side, it provides a visual display structure directed at the user. It combines them within a functional architecture; food product preservation, food Limiting unwanted direct contact between the sensor and the receiver ensures freshness. Perception of related environmental changes and visualization of these changes before unpacking. 5 its functions are evaluated as within the same multilayer food packaging (1) It enables its realization.

Claims

31 REQUESTS 1. The invention relates to the protection of the environment caused by the preservation of food products during the storage of food products. Changes that can be associated with freshness status within the packaging. the perception and visual impact of these changes from outside the packaging Multilayer food packaging (1) for evaluation purposes, and its feature is; food 5 The main body of the packaging (2) containing the food placement volume (7) in which the product is placed, biodegradable carrier contained within the main body of the packaging (2) agricultural waste source associated with layer (3) and biodegradable carrier layer (3). cellulose carrier layer (4), freshness occurring in food placement volume (7) Sensing module for evaluating related changes (8), the 10 in question The graphene-doped sensing layer (9) located within the sensing module (8), graphene-doped sensing layer (9) or functional with the said layer The graphene-doped sensitive film (10) in relation to the change in the food medium pH sensitive sensing element (11) and pH sensitive sensing element (11) pH-sensitive change element (12) in functional relationship, food placement 15 freshness-related environmental components between volume (7) and sensing module (8) Detection transition window (34) for controlled passage and selective permeable interface layer (17), graphene-doped sensing layer (9), graphene-doped sensing film (10) and direct contact of the pH-sensitive sensing element (11) with the food product food contact separator layer (21), pH sensitive change element (12) with 20 freshness indicator layer (13) which is in functional relationship and the freshness in question functional on the indicator layer (13) or with the freshness indicator layer (13) Color changing indicator element (14) in connection with the food environment unaffected by changes or affected by said changes The limited reference color indicator (31) varies depending on the change in the food environment. visual characteristic changing freshness color indicator (32) and reference color indicator (31) and the freshness color indicator (32) in the same visual field were compared. Indicator comparison area (33) for evaluation and perception module (8), graphene-doped sensing layer (9), graphene-doped sensing film (10), pH sensitive sensing element (11), pH sensitive change element (12), freshness indicator layer 30 (13), color changing indicator element (14), reference color indicator (31), freshness functional relationship between color indicator (32) and indicator comparison area (33) perception on the side that brings together the food placement volume (7) transition window (34), selective permeable interlayer (17) and food contact separator layer 32 (21) is characterized by containing an integrated sensing and display module (38). is being done.

2. Multilayer food packaging (1) according to claim 1, and its feature is; packaging main food contact surface (5) on the side of the body (2) that faces the food placement volume (7), On the side facing the outside environment, there is an outer protective surface (6) and an integrated 5 elements of the sensing and display module (38) that perform the sensing function food placement volume (7), and the elements that perform the visual display function are external. inside the main body of the packaging (2) in such a way as to direct it toward the protective surface (6). It is characterized by its positioning.

3. Multilayer food packaging (1) according to claim 1, and its characteristic is; food placement volume 10 The controlled transition structure between (7) and the sensing module (8) is a selective permeable interface. Selective permeable micropore structure (18) within the layer (17), word volatile medium passing through selective permeable micropore structure (18) volatile compound transmission channel (19) which directs its components to the sensing module (8) and graphene-doped 15 medium components transmitted through the volatile compound transmission channel (19) Interaction with the sensitive film (10) and pH sensitive sensing element (11) is possible. It is characterized by containing the sensory interaction volume (20) that provides.

4. Multilayer food packaging (1) according to claim 3, and its feature is; selectively permeable micro Detection of the pore structure (18), liquid or solid components of the food product while limiting the direct transition to module (8), freshness status 20 Selective transmission of volatile compounds associated with volatile ambient components. will allow passage to the channel (19) and the volatile environmental components in question in a way that will direct the perception interaction volume (20) It is characterized by its organization.

5. Multilayer food packaging (1) according to claim 3, and its feature is; perception interaction 25 the volume (20) of the medium transmitted through the volatile compound transmission channel (19) in a controlled manner. its components graphene-doped sensing film (10) and pH-sensitive sensing element (11) graphene-doped sensitive film (10) and pH that will allow interaction with by positioning it in functional relationship with the sensitive sensing element (11) It is characterized by 30 According to claim 6.1, it is a multilayer food packaging (1) and its feature is; sensing module. (8) physical damage from external environment or adjacent packaging layers Sensor protection layer (22) to protect against impacts, main body of packaging (2) outer protective layer (23) located on the external environment side and integrated from the external environment 33 unwanted environmental moisture transfer to the sensing and display module (38) It is characterized by containing a limiting moisture barrier layer (24).

7. Multilayer food packaging (1) according to claim 6, and its feature is; moisture barrier on the outer protective surface (6) of the layer (24), selective permeable intermediate layer (17) controlled transition between food placement volume (7) and sensing module (8) 5 by being positioned in the region, integrated sensing from the external environment and Unwanted environmental moisture passage to the indicator module (38) moisture barrier limited by layer (24) and sensing from food settlement volume (7) Selective permeability of the passage of freshness-related environmental components to the module (8) It is characterized by being provided in a controlled manner through the intermediate layer (17). 10 According to claim 8, multilayer food packaging (1) has the characteristic of sensing and displaying. physical support of the elements within the main body of the packaging (2) functional layer support layer (25), graphene-doped sensing the sensing layer carrier surface (26) and freshness supported by layer (9) The indicator layer carrier surface (27) on which the indicator layer (13) is supported 15 It is characterized by its inclusion.

9. Multilayer food packaging (1) according to claim 8, and its feature is; sensing layer on the side of the carrier surface (26) facing the food placement volume (7), indicator layer the carrier surface (27) is located on the side facing the outer protective surface (6) and functional layer support layer (25) of the carrier surfaces in question 20 by arranging them in such a way as to maintain their determined positions relative to each other It is characterized by... According to claim 10, it is a multilayer food packaging (1) and its characteristic is; multilayer structure. superficial on the surfaces of adjacent layers facing each other The layered connection surface (28) that provides integration, the main body of the packaging (2) 25 uncontrolled passage between the packaging's internal and external environments in sealed sections limiting environmental seal line (29) and forming the multilayer structure a layer that limits the separation of layers at their edges It is characterized by containing edge linking (30). According to claim 11, it is a multilayer food packaging (1) with the characteristic of being color-changing 30 The change occurring in the indicator element (14) is reported by the user. visual monitoring area (15) for observation and freshness indicator layer (13) indicator window that allows observation from outside the packaging (16) It is characterized by its inclusion. 34 12. Multilayer food packaging (1) according to claim 11, and its feature is integrated sensing. and on the side of the display module (38) facing the outside environment, freshness indicator layer (13) and freshness color indicator (32) physical from external environment The presence of an indicator protection window (35) to protect against the effects and the word The subject is the indicator protection window (35), the visual monitoring area (15) and the indicator 5 in a way that will allow visual observation between the window (16) and the outside environment It is characterized by its positioning. According to claim 13, multilayer food packaging (1) and its characteristic is; reference color the freshness color indicator (31) and the freshness color indicator (32) with changes in the food environment physically separated from the interacting part and the 10 in question in a reference region where the impact of changes is limited positioning and reference color indicator (31) and freshness color indicator (32), will allow simultaneous comparisons under the same visual conditions characterized by its arrangement within the sign comparison area (33) in this way. is being done. 15 According to claim 14, multilayer food packaging (1) has the feature of integrated sensing. and the indicator module (38) physically on the packaging main body (2) supporting layer fixing framework (36) and integrated sensing and display determined between the layers (2) of the main body of the module (38) packaging It includes a module placement slot (37) for placement in position 20 It is characterized by...

15. Multilayer food packaging (1) according to claim 14, and its feature is; layer fixing. frame (36) and module placement slot (37), integrated sensing and the indicator module (38) should not rotate, slide or wrap during use 25 It is characterized by having complementary boundary surfaces.

16. Multilayer food packaging (1) according to claim 15, and its feature is; layer fixing. frame (36) and module placement slot (37), integrated sensing and It is possible to place the indicator module (38) only in the specified orientation. It includes complementary geometric guiding surfaces and the word 30 The subject of geometric guidance surfaces, sensing transition window (34) food to the seating volume (7), and the indicator protection window (35) to the outer protection surface. (6) It is characterized by being organized in a way that will guide. 35 According to claim 17, it is a multilayer food packaging (1) with the feature of pH sensitive sensing. element (11) and pH-sensitive change element (12) have a functional relationship with each other. arrangement of its individual components and pH-sensitive changes element (12), perceived change to color change indicator element (14) Functional 5 with color-changing indicator element (14) that will enable transmission. It is characterized by being in a relationship. According to claim 18, it is a multilayer food packaging (1) and its characteristic is; biodegradable carrier. the layer (3) and the cellulose carrier layer (4) derived from agricultural waste, integrated biodegradable carrier structure in which the sensing and display module (38) is supported assembled in a way that will create graphene-enhanced sensing 10 limited detection of the biodegradable carrier structure in question layer (9) It is characterized by its local location within the region.

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