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52results about How to "Good fresh-keeping effect" patented technology

Novel antibacterial peptide GG25 and application thereof

The invention is applicable to the technical field of polypeptides, and provides a novel antibacterial peptide GG25 and application thereof, and the amino acid sequence of the antibacterial peptide GG25 is as shown in SEQ ID No.1. The molecular weight of the novel antibacterial peptide GG25 is 2890.52 Da, and the novel antibacterial peptide GG25 has antibacterial activity on escherichia coli, klebsiella pneumoniae, pseudomonas aeruginosa, enterococcus faecalis, salmonella typhimurium, methicillin-resistant staphylococcus aureus, staphylococcus aureus, staphylococcus epidermidis, listeria monocytogenes and bacillus subtilis; the hemolytic activity is low, the cytotoxicity is small, and the escherichia coli and methicillin-resistant staphylococcus aureus are not easily induced to generate drug resistance; in addition, the gelatin chitosan food coating containing GG25 also has a good beef preservation effect, and can be applied to the fields of food, animal husbandry, medicine and the like.
Owner:JILIN UNIVERSITY

Treatment method for relieving oxidative browning of respiratory climacteric fruits and vegetables

The invention discloses a treatment method for relieving respiratory climacteric fruit and vegetable oxidation browning, and belongs to the technical field of fruit and vegetable storage and fresh-keeping processing. The method comprises the following steps: soaking treatment equipment and fruits and vegetables with NaClO or 75% ethanol solution, washing with deionized water, draining, and cutting into fresh-cut fruit and vegetable slices; soaking the pretreated fresh-cut fruit and vegetable slices in a 2-50 [mu] mol / L theanine solution, taking out the fresh-cut fruit and vegetable slices after the fresh-cut fruit and vegetable slices are completely soaked, and removing moisture on the surfaces of the fresh-cut fruit and vegetable slices; and storing the fresh-cut fruit and vegetable slices, wherein the sealed storage temperature is 0.5-8 DEG C. The treatment method can effectively slow down browning of the fresh-cut fruits and vegetables, is pollution-free to the environment, safe and sanitary, can improve the edible flavor of the fresh-cut fruits, and has the advantages of being green, environment-friendly, high in quality and low in price; the method not only can be used for relieving oxidation browning of fresh-cut apples, pears and yellow peaches, but also can be applied to browning and preservation of other breath climacteric fruits and vegetables, weight loss is reduced, and the method has good economic value.
Owner:ANHUI AGRICULTURAL UNIVERSITY

Carboxymethyl chitosan-covalent organic framework-nano-silver composite material as well as preparation method and application thereof

The invention belongs to the technical field of biological bacteriostasis and food packaging materials, and particularly relates to a carboxymethyl chitosan-covalent organic framework-nano-silver composite material and a preparation method and application thereof. According to the preparation method of the carboxymethyl chitosan-covalent organic framework-nano-silver composite material, provided by the invention, a metagen is adopted as a reducing agent, and AgNPs is synthesized through a biological method; the COF-AgNPs composite material is prepared by an in-situ growth method, and the ordered porous structure of the COF provides specific constraint for the AgNPs, so that aggregation of the AgNPs is effectively avoided; in addition, COF-AgNPs is added into a CMCS matrix, so that the film-forming ability of the COF-AgNPs is enhanced, and the CMCS matrix is endowed with excellent antibacterial performance and mechanical performance. Therefore, the composite film material prepared by adopting the preparation process can effectively improve the fresh-keeping effect of fruits and vegetables, and has a good application prospect in the field of packaging film materials for fruit and vegetable fresh-keeping.
Owner:NORTHEAST AGRICULTURAL UNIVERSITY

Application of phyllanthus emblica essential oil microcapsule and / or phyllanthus emblica extract in fruit and vegetable preservation

The invention discloses an application of phyllanthus emblica essential oil microcapsules and / or phyllanthus emblica extract in fresh keeping of fruits and vegetables, especially fresh-cut fruits and vegetables, the phyllanthus emblica microcapsules and the phyllanthus emblica extract, especially a compound of the phyllanthus emblica microcapsules and the phyllanthus emblica extract, prepared by the invention, have a relatively good fresh-keeping effect on fruits and vegetables, especially fresh-cut fruits and vegetables, and the phyllanthus emblica essential oil microcapsules and / or the phyllanthus emblica extract have a relatively good fresh-keeping effect on fruits and vegetables, especially fresh-cut fruits and vegetables. And safety and low cost are realized.
Owner:GUANGDONG FOOD & DRUG VOCATIONAL COLLEGE

Preparation method and fresh-keeping application of wheat protein cross-linked edible nanocellulose coating film

The invention belongs to the technical field of food packaging materials, and particularly discloses a preparation method and fresh-keeping application of a wheat protein cross-linked edible nanocellulose coating film. The multifunctional edible composite coating film with good mechanical strength, water resistance, water binding capacity, self-healing property and transparency is successfully prepared by dissolving four substances of soybean seed coat nanocellulose, sodium alginate, wheat protein and lactone at high temperature to form a composite solution, and is applied to fruit preservation, such as bananas; the preparation method of the edible nanocellulose coating film is simple, and various properties are integrated and excellent.
Owner:BOHAI UNIV

Oat glucan-phenolic acid graft copolymer, preparation method thereof and application of oat glucan-phenolic acid graft copolymer as antioxidant antibacterial liquid

The invention provides an oat dextran-phenolic acid grafted copolymer, a preparation method thereof and application of the oat dextran-phenolic acid grafted copolymer as an antioxidant antibacterial liquid, and belongs to the technical field of food preservation, phenolic acid and oat dextran are mainly used as reaction substrates, the oat dextran-phenolic acid grafted copolymer is prepared through an N, N '-carbonyldiimidazole method under the assistance of vacuum ultrasound, and the oat dextran-phenolic acid grafted copolymer is used as an antioxidant antibacterial liquid. The synthesis process is simple, the synthesis time can be effectively shortened through vacuum ultrasound, the synthesis efficiency is improved, meanwhile, the oat glucan-phenolic acid grafted copolymer prepared through the N, N '-carbonyldiimidazole method has good antioxidant and antibacterial activity, the shelf life of chilled fresh meat can be effectively prolonged when the oat glucan-phenolic acid grafted copolymer is used for preserving the chilled fresh meat, and the service life of the chilled fresh meat is prolonged. The nutritional ingredients are reserved.
Owner:CHENGDU UNIV

Liquid preservative for fresh walnut kernel

This invention relates to the field of food preservation technology and discloses a liquid preservative for preserving fresh walnut kernels. The preservative comprises a natural preservative, a solubilizing and stabilizing agent, and a solvent. This liquid preservative uses natural phloretin as the preservative component, combined with Tween 80 as a solubilizing and stabilizing agent and ethanol as a solvent. This effectively solves the problems of poor water and oil solubility and inadequate stability of phloretin, allowing it to be stably dispersed in the preservative system and fully exert its antioxidant and antimicrobial effects. Furthermore, the preparation method is simple and easy to implement, and the production process is safe and controllable. It is convenient to use; the preservation of fresh walnut kernels can be achieved through dilution and soaking. The diluted solution can be reused, reducing usage costs. Simultaneously, it can inhibit bacterial growth during the storage of fresh walnut kernels, delay oxidative deterioration, maintain their good appearance and quality, extend shelf life, and meet the market demand for high-quality fresh walnut kernels.
Owner:LINCANG GONGTOU SHUNNING NUT DEV CO LTD

Fruit growth regulator and bacteriostatic preservative as well as preparation method and application thereof

The invention provides a fruit growth regulator and bacteriostatic preservative as well as a preparation method and application thereof, and belongs to the technical field of preservation, pomace is taken as a raw material, and pomace microfibrillated cellulose, pectin and seed oil containing phenolic substances are extracted through organic acid treatment, DES reagent auxiliary mechanical treatment, ethanol water treatment and other treatments; then carrying out hydroformylation modification on nano cellulose, grafting chitosan, and compounding with pectin to obtain dialdehyde microfibrillated cellulose-chitosan-pectin composite particles with pH response performance, and taking the dialdehyde microfibrillated cellulose-chitosan-pectin composite particles as a stabilizer of a Pickering emulsion; the green growth regulator solution is used as a continuous phase, the seed oil mixed Chinese herbal medicine extract is used as a dispersion phase, the controlled-release Pickering emulsion with growth regulation and bacteriostasis effects is prepared, the prepared emulsion is sprayed on berries to form a film layer, the growth process of the berries can be regulated, the fruit yield and quality are improved, and the quality of the berries is improved. And antibacterial substances can be slowly released for preservation when berries are picked and stored.
Owner:SHAANXI UNIV OF SCI & TECH

A response surface optimization method for preserving soft-seeded pomegranates using brassinolide and γ-aminobutyric acid

The invention discloses a method for optimizing brassinolide and gamma-aminobutyric acid for preserving soft-seeded pomegranates by response surface method. On the basis of single factor test results, the concentration of brassinolide, the concentration of gamma-aminobutyric acid and the processing time are used as response variables, each variable is coded according to three levels of low, medium and high, i.e., 1, 0 and 1, and a Box-Beken experiment with three factors and three levels of N=17 is designed by using software designexpert10. The freshness of the soft-seeded pomegranates after refrigeration for 120 days and room temperature storage for 5 days is used as a response value, and each factor is fitted and regressed to obtain a model equation. The optimal conditions for treating the soft-seeded pomegranates with brassinolide and gamma-aminobutyric acid are determined by using the response surface method, so that the precise control of the freshness-preserving treatment and the stability of the freshness-preserving effect are achieved.
Owner:NANYANG NORMAL UNIV

Food-grade composite fruit and vegetable preservative as well as preparation method and application thereof

The invention relates to a food-grade composite fruit and vegetable fresh-keeping agent, a preparation method thereof and application of the food-grade composite fruit and vegetable fresh-keeping agent in fruit and vegetable storage and transportation fresh-keeping and / or improvement of the content of functional components in fruits and vegetables. The fruit and vegetable fresh-keeping agent disclosed by the invention shows an excellent fresh-keeping effect before and after the harvest of various fruits and vegetables, and can effectively increase the content of functional components (such as anthocyanin and flavonoid) in the fruits and vegetables; besides, all the components in the fruit and vegetable fresh-keeping agent are easy to obtain and low in cost, and all the components of the fruit and vegetable fresh-keeping agent are edible, so that the fruit and vegetable fresh-keeping agent is safe, reliable and beneficial to human health. Therefore, the fruit and vegetable preservative disclosed by the invention has a wide application prospect and a remarkable market value.
Owner:SHENYANG AGRI UNIV

Amber silkworm feeding device and use method

PendingCN119385117ASolve the inconvenience of operationGuaranteed Humidity ConditionsAnimal husbandryFecesFishery
The invention discloses an amber silkworm rearing device and a using method, and belongs to the technical field of insect rearing, the amber silkworm rearing device comprises a box body, a climbing net, a ventilation device, a screening net, a liquid circulation bottle inserting device and an excrement collecting tray, the box body is hinged to a front door and a rear door, the climbing net is arranged on the inner side wall of the box body, the ventilation device is installed on the side wall of the box body, and the screening net is arranged on the box body. The liquid circulation bottle inserting device comprises a liquid circulation inserting bottle and a bottle inserting supporting frame, the liquid circulation inserting bottle is fixed to the bottle inserting supporting frame, the bottle inserting supporting frame is installed on the inner side wall of the box body, a bottle clamping hole is formed in the screening net, and the upper portion of the liquid circulation inserting bottle is of an opening structure. An opening structure of the liquid circulating insertion bottle is located in the bottle clamping hole, and the liquid circulating insertion bottle circulates with an external water source through a pipeline; the excrement collecting tray is arranged at the bottom end in the box body. By feeding the amber silkworms indoors, the survival rate of the whole-age larvae of the amber silkworms can be effectively increased, the number loss of silkworm bodies is reduced, and the occurrence of silkworm diseases is reduced.
Owner:RES INST OF SILKWORM & HONEYBEE YUNNAN ACAD OF AGRI SCI

Application of compound salimusk in bacteriostasis and preservation of strawberries

The invention discloses an application of a compound salimusk in bacteriostasis and preservation of strawberries, starting from botryis cinerea which is a main pathogenic bacterium after strawberry fruits are picked, and the bacteriostasis effect of the salimusk on the botryis cinerea is studied. The saxellik belongs to important natural musk, contains terpene and alcohol as main components, and has biological activities such as antibacterial activity, anti-inflammatory activity and anti-oxidation activity. Experiments show that the salimusk can effectively inhibit mycelial growth and spore germination. And the destroying effect of the salimusk on fungal spores is deeply explored by observing the microstructure of the tested strain. The strawberry fresh-keeping agent can effectively delay reduction of weight and hardness and nutrient loss in the strawberry storage process, and is good in fresh-keeping effect. Results show that the salimusk has the potential to replace existing chemical bactericides, and a theoretical basis is provided for development of novel antibacterial preservatives.
Owner:JILIN UNIVERSITY

Yellow cattle meat fresh-keeping cabinet

The utility model relates to the field of meat product fresh-keeping treatment, in particular to a yellow cattle meat fresh-keeping cabinet which comprises an L-shaped fresh-keeping cabinet body, a freezing area is arranged at the horizontal position of the fresh-keeping cabinet body, and a freezing fresh-keeping cabinet body is installed in the freezing area. An ultraviolet germicidal lamp structure is arranged on the outer side of the freezing fresh-keeping cabinet, and a sliding groove is formed in the wall provided with the ultraviolet germicidal lamp structure. According to the cattle meat fresh-keeping device, the freezing fresh-keeping cabinet is arranged in the freezing area, through irradiation of the ultraviolet lamp structure, cattle meat in the freezing area is further sterilized, and through vertical movement of the ultraviolet lamp structure, the cattle meat can be irradiated by ultraviolet rays at different angles; therefore, the yellow cattle meat can have a better fresh-keeping effect.
Owner:GUANGDONG SHENGYANG AGRI ECOLOGICAL DEV CO LTD

Novel polystyrene fresh-keeping box

A polystyrene preservation box relates to the technical field of food preservation and comprises a base, a box body is fixedly mounted at the top end of the base, a box door is hinged to the right end of the front side of the box body, a plurality of mounting grooves are formed in the surface of a mounting plate, placing plates are slidably connected into the mounting grooves, and placing grooves are formed in the surfaces of the top ends of the placing plates. A handle is fixedly installed on the front side of the placing plate, an installation block is fixedly installed on the left side of the box body, a lock hole is formed in the surface of the installation block in a penetrating mode, a push rod is fixedly installed on the left side of the base, and universal wheels are fixedly installed at the four corners of the bottom end of the base. The food can be fixed through a containing groove formed in a containing plate, a push rod is pushed, universal wheels can rotate at any time, then the box body is moved, the box door is closed, a lock belt penetrates through a lock hole, the fresh-keeping box is locked and closed, and the fresh-keeping effect is better.
Owner:ZHUOZHOU TIANBAIRUI PACKAGING MATERIAL CO LTD

Refrigerator and fruit and vegetable fresh-keeping method

According to the refrigerator and the fruit and vegetable fresh-keeping method, a light fresh-keeping module capable of adjusting different light sources and frequencies and an automatic lifting shelf are carried in the refrigerator, the variety and the weight of fruits and vegetables placed on the automatic lifting shelf can be recognized in combination with a food material recognition system, and the situation that the fruits and the vegetables are stored in a mixed mode can be recognized. The most suitable preservation mode can be determined according to the fruit weight, the first influence parameter, the vegetable weight and the second influence parameter; wherein the fresh-keeping mode comprises a fruit fresh-keeping mode and a vegetable fresh-keeping mode, the light source and the irradiation frequency of the light fresh-keeping module are intelligently adjusted according to the determined fresh-keeping mode, the distance between the automatic lifting shelf and the light fresh-keeping module is adjusted, and the best fresh-keeping effect on fruits and vegetables is achieved.
Owner:HISENSE RONSHEN GUANGDONG REFRIGERATOR

Transportation fresh keeping device

Transportation fresh-keeping device, including folding support mechanism and fresh-keeping bag.The folding support mechanism includes support column, both ends of which are provided with fixed frame.The fixed frame and support column are assembled to form containing space, and the fresh-keeping bag is arranged in the containing space.The fixed frame is provided with fixed assembly seat on the front surface facing the fresh-keeping bag, and the fresh-keeping bag is provided with fixed assembly part, which is assembled and fixed with the fixed assembly seat.The fixed frame is provided with forklift groove on the back surface away from the fresh-keeping bag.Compared with the prior art, the present application has the following beneficial effects: the fish is preserved by the fresh-keeping bag, and the flowing liquid can be automatically discharged, the fresh-keeping effect is good, and at the same time, the folding support mechanism is used to contain and protect the fresh-keeping bag, the overall structure is light and firm, can be folded and stored, and the occupied space of the device is greatly reduced.The device can be combined, spliced and stacked, the collision between them during stacking is prevented, and the damage rate of the device during transportation is reduced.
Owner:宁波卓晟户外科技有限公司

Corrosion-resistant PPR pipe

The utility model discloses a corrosion-resistant PPR pipe which comprises a water pipe base body, a blocking layer is arranged on the surface of the water pipe base body, a supporting structure is arranged on the surface of the blocking layer, a waterproof layer is arranged on the surface of the supporting structure, and a protective layer is arranged on the surface of the waterproof layer. The blocking layer comprises an aluminum foil blocking film wound on the surface of the water pipe base body. By arranging the blocking layer, water vapor in the water pipe base body can be blocked, meanwhile, the phenomenon of leakage of the cracked water pipe base body can be prevented, the supporting structure, the waterproof layer and the protective layer can greatly reduce the contact area between the water pipe base body and the external environment, corrosion of the external environment is reduced, and the service life of the water pipe is prolonged. According to the PPR pipe, the structural functionality of an existing PPR pipe can be improved, the single-layer PPR plastic is assisted in blocking the external environment, the situation that the overall weight of the PPR pipe is greatly improved due to metal materials is prevented, and the PPR pipe can meet the installation requirements of different suspended environments.
Owner:GUIZHOU DONGSHENGHUA PLASTIC PIPE IND CO LTD

Preparation method of juice-exploded sausage

The invention relates to the field of processing of sausages, and provides a preparation method of juice-exploded sausages, which solves the defect of poor product quality caused by the defects of the processing method of the sausages in the prior art, and comprises the following preparation steps: (1) preparing raw materials and pickling auxiliary materials; (2) unfreezing the raw material pork, and removing miscellaneous hair, fascia and obvious fat; (3) pickling; (4) stirring and pulping; (5) filling; and (6) twisting, hanging on a rod, cooking and forming, airing, cutting into sections and packaging.
Owner:FUJIAN YUJIAWENG FOOD CO LTD

Green leaf vegetable fresh-keeping composite film containing nicotinamide and preparation method of green leaf vegetable fresh-keeping composite film

The invention relates to the field of new packaging materials, and provides a composite film for fresh-keeping of green leaf vegetables and a preparation method thereof, the main raw materials of the composite film comprise a base material, citric acid, glacial acetic acid and nicotinamide; wherein the base material is a mixture of chitosan and polyvinyl alcohol; the preparation method comprises the following steps: dissolving and mixing the chitosan and the polyvinyl alcohol, adding a nicotinamide solution, stirring and carrying out ultrasonic treatment to uniformly distribute the components, and finally forming the film by adopting a tape casting process. The composite film can effectively delay oxidation and decay of the green vegetables and remarkably prolong the shelf life of the green vegetables. The composite film has good mechanical properties and flexibility, and is suitable for various fresh-keeping applications. The preparation process is simple, large-scale production is easy, and the material is environment-friendly and biodegradable and has a wide application prospect.
Owner:SHANDONG AGRICULTURAL UNIVERSITY

Phalaenopsis fresh cut flower preservation solution and application thereof

The invention discloses a butterfly orchid fresh cut flower fresh-keeping solution, relates to the field of fresh-keeping after fresh cut flowers are picked, and mainly discloses an optimal combination of the fresh-keeping solution which contains 2g / L of sucrose, 250mg / L of citric acid, 0.5 g / L of 20% sodium dichloroisocyanurate, 5mg / m < 3 > of 1-methylcyclopropene and the balance of water. And the flower vase cutting period of the phalaenopsis amabilis is prolonged.
Owner:FUJIAN AGRI & FORESTRY UNIV

Refrigerator fresh-keeping device and refrigerator

The utility model relates to the technical field of article preservation, in particular to a refrigerator preservation device and a refrigerator. The refrigerator fresh-keeping device comprises a fresh-keeping cabin, a nitrogen making module, a vacuum pump, a first valve and a second valve, the fresh-keeping cabin is provided with an air inlet and an air outlet, the nitrogen making module is provided with a feeding port, a nitrogen outlet, a first oxygen discharging port and a second oxygen discharging port, and a three-way connecting pipe is provided with a first port, a second port and a third port; the nitrogen outlet is communicated with the gas inlet through a first pipeline; the second oxygen outlet is communicated with the first opening through a second pipeline; the second opening is communicated with the air outlet through a third pipeline; the vacuum pump is communicated with the third opening, the first valve is arranged on the second pipeline, and the second valve is arranged on the third pipeline; and one of the first valve and the second valve is opened. By arranging the vacuum pump connected with the nitrogen generation module and the fresh-keeping cabin, oxygen accumulated in the nitrogen generation module is fully discharged, and the fresh-keeping cabin can be vacuumized before and after nitrogen filling, so that the nitrogen utilization rate is high, and the fresh-keeping effect is good.
Owner:NINGBO FOTILE KITCHEN WARE CO LTD

Degradable biocomposite membrane based on protein fiber reinforcement and preparation method and application thereof

The present invention discloses a degradable biocomposite film based on protein fiber reinforcement, a preparation method and an application. The degradable biocomposite film based on protein fiber reinforcement claimed in the present invention is prepared from a biodegradable polymer material solution, a protein fiber solution, glycerol and water, wherein the protein fiber solution refers to a protein fiber solution obtained by sequentially subjecting the protein to acid treatment, heat treatment and alkali treatment, and the pH value of the protein fiber solution is 2.0-7.0. A degradable biocomposite film provided by the present invention can effectively avoid a large amount of water loss in food to achieve a better preservation effect; the tensile strength result is not less than 9.0MPa, and the practicality is enhanced; the DPPH free radical scavenging rate is not less than 60%, and the ABTS free radical scavenging rate is not less than 70%. Therefore, the degradable biocomposite film prepared by the present application has a good application effect in terms of anti-oxidation of food.
Owner:QILU UNIVERSITY OF TECHNOLOGY (SHANDONG ACADEMY OF SCIENCES)

An immersion-type cryogenic quick-freezing device with recyclable safe liquid coolant.

This utility model relates to the field of quick-freezing and preservation technology, specifically an immersion-type ultra-low temperature quick-freezing device using a recyclable safe liquid cooling fluid. It includes a housing and a foldable shelf located on the outside of the housing. The interior of the housing is divided into upper and lower sections by a partition. A freezing chamber is located in the upper section, and a refrigeration system is located in the lower section. A touchscreen operation panel is located on the upper right side of the outer wall of the housing. A sealing cover hinged to the housing is located above the freezing chamber. A stainless steel material frame is located inside the freezing chamber, and a lifting mechanism is located at the bottom of the material frame. This quick-freezing device employs immersion-type ultra-low temperature liquid quick-freezing entropy reduction technology, uses a recyclable cooling fluid, shortens freezing time, and also has the advantages of low energy consumption, low noise, and suitability for various indoor environments and climates.
Owner:WUXI SUYUN BIOTECHNOLOGY CO LTD

Cold chain transportation vertical logistics transmission mechanism

The utility model discloses a cold chain transportation vertical logistics transmission mechanism which comprises a moving trolley, a support is installed on the moving trolley, a lifting rod is connected into the support in a sliding mode, a lead screw is in transmission connection with the middle of the lifting rod, a motor is installed on the surface of the moving trolley and fixedly connected with the lead screw, and a containing plate is fixedly connected to the side face of the lifting rod. An electric cylinder is mounted on the lower surface of the placement plate, a support is mounted at the upper end of the electric cylinder, a plurality of rollers are mounted on the surface of the support and penetrate through the placement plate, and lifting of the support and the rollers is controlled through the electric cylinder; when the rollers are located below the placement plate, the heat preservation box cannot slide when being placed on the placement plate, and the heat preservation box is prevented from falling off; when the heat preservation box is pushed, the rollers rotate and cannot abrade the heat preservation box, the heat preservation box is prevented from being damaged, and the preservation effect on products is better.
Owner:YANGJIANG YUFENG COLD CHAIN LOGISTICS CO LTD

Composite preservation method of pineapples

The invention discloses a composite preservation method of pineapples. According to the invention, it is found that the preservation effect of film coating treatment of the fruit wax and melatonin mixed solution on pineapples is better than that of single fruit wax film coating or melatonin solution soaking, and maturation and aging of the pineapple fruits are effectively delayed, specifically, color change and hardness reduction of the pineapple fruits are delayed, the water loss rate of the pineapple fruits is reduced, and the respiration of the pineapple fruits is inhibited; the accumulation of MDA, superoxide and active oxygen in the fruits is reduced, the membrane damage of the fruits is reduced, and technical support and theoretical basis are provided for the improvement of post-harvest treatment and storage and transportation technologies of the pineapples.
Owner:SOUTH CHINA AGRICULTURAL UNIVERSITY

Heat-insulating and fresh-keeping PE packaging bag

The utility model discloses a heat-insulating and fresh-keeping PE packaging bag which comprises a bag body, and a sealing strip is arranged at an opening in the top of the bag body. A through hole is formed in one side of the bag body, and a one-way ventilation valve is bonded to the outer side of the through hole through an adhesive; the bag body is sequentially provided with a heat sealing layer, a blocking layer and a heat insulation layer from inside to outside. The heat insulation layer comprises a waterproof insulation layer, a waterproof heat insulation layer and a heat reflection layer which are sequentially arranged from inside to outside. According to the heat-insulating and fresh-keeping PE packaging bag provided by the utility model, fruits and vegetables are filled into the bag body, sealing can be realized through the sealing strip, and the bag body can be vacuumized by utilizing the one-way ventilation valve, so that the oxidation reaction of fresh food and the breeding of bacteria are greatly slowed down; meanwhile, the bag body is provided with the blocking layer, the fresh-keeping effect is good, the freshness and quality of vegetables and fruits are effectively protected, the heat insulation layer is arranged, the anti-static and heat insulation effects are good, external heat radiation and internal heat loss can be prevented, and meanwhile the good waterproof performance is achieved.
Owner:LIANGHE PACKAGING (ZHEJIANG) CO LTD

Automatic vegetable packaging machine

The utility model discloses an automatic vegetable packaging machine which comprises a machine frame. The feeding frame is movably arranged on one side of the rack; the photoelectric detection device is arranged on one side of the feeding frame; a thin film discharging mechanism is arranged at the bottom of the rack; the bag making device is arranged on one side of the feeding frame and located above the thin film discharging mechanism; the middle sealing mechanism is arranged on one side of the machine frame and used for heating and pressing two overlapped film edges after a packaging bag is formed, and the end sealing mechanism is arranged at the tail end of the machine frame and used for heating, pressing and cutting off the end of the packaging bag. Compared with the prior art, the automatic vegetable packaging machine has the advantages that the functions of automatic vegetable feeding, length detection, packaging, sealing, weighing, labeling and the like can be achieved, the automation degree, the production efficiency and the packaging quality of vegetable packaging are improved, and the increasing requirements for efficient packaging of scenes such as online vegetable selling and the like are met.
Owner:SHANGHAI XIYUE PACKAGING MACHINERY CO LTD

Honey nata de coco and processing technology thereof

The invention provides honey nata de coco and a processing technology thereof. The honey nata de coco is prepared from 90-110 parts of nata de coco, 25-35 parts of special honey, 8-12 parts of crystalline fructose, 6-9 parts of concentrated lemon juice, 60-90 parts of selenium-enriched water and 3-5 parts of rose petal extract. The nata de coco is prepared through a specific method, and the method comprises the steps of pretreatment of fresh coconut water, segmented fermentation, deacidification and the like. The processing technology comprises the steps of fine pretreatment, boiling, blending, deep dipping, gradient drying, aseptic packaging and the like. During boiling, microwave-assisted heating is adopted, and dipping is carried out in an ultrasonic environment. In the whole process, parameters of each link are strictly controlled, such as oxygen concentration of an oxygen-enriched environment, power and frequency of microwave heating, vacuum degree, drying temperature, turning interval and the like. The honey nata de coco is unique in taste and rich in nutrition, the processing technology is scientific and reasonable, the product quality can be effectively guaranteed, and the shelf life can be effectively prolonged.
Owner:HAINAN LEYE FOOD CO LTD