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75 results about "Active packaging" patented technology
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The terms active packaging, intelligent packaging, and smart packaging refer to packaging systems used with foods, pharmaceuticals, and several other types of products. They help extend shelf life, monitor freshness, display information on quality, improve safety, and improve convenience.
Active electronic media device packaging
ActiveUS20090168088A1Improve flame retardant performanceHigh melting pointElectric signal transmission systemsElectromagnetic wave systemTransmitted powerEngineering
Active packaging for supplying power, data, or both power and data to an electronic media device while the device is housed within the active packaging is provided. The active packaging may include one or more electrical traces in-molded or printed onto the packaging that couple to a suitable connector on the device. Power may also be provided via one or more wireless power techniques. Multiple active packages may be conductively stacked to transmit power, data, or both power and data to a row or stack or devices. POM sensors integrated with or attached to the device (or the active packaging itself) may detect various movement events. Coordinated and synchronized display effects may be presented while the devices are housed within the active packaging.
Owner:APPLE INC
Packaging system for preserving perishable items
A packaging system for preserving perishable items which involves a thermoplastic reclosable bag or container wherein the thermoplastic reclosable bag or container involves sealed means for closing one end of the thermoplastic reclosable bag or container, and an external patch for delivering active packaging materials (e.g., chemicals) into the thermoplastic reclosable bag or container, and means for flowing active packaging materials into the thermoplastic reclosable bag or container from the external patch into the thermoplastic reclosable bag or container. Such packaging can perform a number of functions such as moisture regulation, antimicrobial emission, ethylene scavenging, ethylene emission, antioxidant emission, flavor adsorption and emission, and oxygen and carbon dioxide regulation. The present invention allows the segregation of active compounds in plastic packaging within an external patch that prevents the direct contact of such compounds and the contents of the package but allows the free exchange of liquids and / or gasses between the patch contents and the package interior.
Owner:UNITED STATES OF AMERICA AS REPRESENTED BY THE SEC OF AGRI THE
Purely natural essential oil composition for keeping fresh and preparation method and using method thereof
The invention discloses a purely natural essential oil composition for keeping fresh and a preparation method and a using method thereof. Essential oil which is extracted from the natural substances of clove, cinnamon, caraway, garlic, seed of cuminum cyminum L. and fennel seed is prepared into an active packaging material with the functions of bacteriostasis and anti-oxidation according to a certain proportion, wherein the active packaging material has the characteristics of wide application range, naturalness, efficiency, no toxicity, simplicity and practicability, and can be widely used for packaging of foods such as fruits, vegetables, meats and the like; and the extraction method is an ultrasound-assisted extraction method. The essential oil composition can be used in various forms, namely the essential oil composition can be coated on the foods, can be used for soaking the foods, can be in the form of preservative bags, and the like. When packaging the foods, the essential oil composition can inhibit growth of microorganisms and resist oxidation at the same time, so that the shelf life of the fruits, the vegetables and the meats can be prolonged by 2 to 8 times, and the essential oil composition meet consumer psychology and has greater actual application value.
Owner:TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Beta-cyclodextrins as nucleating agents for poly(lactic acid)
InactiveUS20090060860A1Increase of PLA crystallinityOrganic active ingredientsBiocideMedicineHeat resistance
The use of β-CDs as nucleating agents for PLA to provide an increase in polymer crystallinity is described. The improvement in increased crystallinity is related to the percentage of β-CDs used. For the analyzed films, crystallinity was approximately 1.47% in the absence of a nucleating agent, and approximately 17.85% in the presence of the maximum amount of nucleating agent tested (e.g., 30%). Thus, improvement in processability, producability, and heat resistance of PLA will depend on the amount of β-CDs loaded. Additionally, loading PLA with β-CDs carrying an antifungal volatile is an effective way to increase PLA crystallinity besides avoiding fungal development when used in active packaging. In this case, the antifungal volatiles, along with changes in headspace concentration because of changes in crystallinity, may prolong the fresh produce shelf life.
Owner:BOARD OF TRUSTEES OPERATING MICHIGAN STATE UNIV
Edible chitosan green tea polyphenol active packaging film material and its preparation method
InactiveCN103087356AImprove antioxidant capacityReduce respirationFlexible coversWrappersAcetic acidGreen Tea Polyphenols
The invention discloses an edible chitosan / green tea polyphenol active packaging film material. The edible green tea polyphenol active packaging film material comprises 1-2 parts by weight of chitosan, 95-100 parts by weight of an aqueous solution of dilute acetic acid, 0.5-1.2 parts by weight of glycerol, 0-0.1 parts by weight of Tween20, 0.5-2 parts by weight of green tea polyphenol and 95-98 parts by weight of water. The compound chitosan active packaging film has a strong oxidation resistance in different food simulants, can guarantee the slow release of the antioxidant substances in the film, has the characteristics of good mechanical performances, good water resistance and small dissolving and puffing degrees in water, and has a good development prospect in the food packaging field, especially the food product oxidation prevention field.
Owner:SHANGHAI JIAO TONG UNIV
Active electronic media device packaging
ActiveUS8092251B2High melting pointImprove flame retardant performanceElectric signal transmission systemsElectromagnetic wave systemTransmitted powerElectron
Owner:APPLE INC
Preparation method of antimicrobial active packaging film loaded with cinnamyl aldehyde essential oil
ActiveCN107858784AIncrease loadHigh in essential oilsFlexible coversWrappersFiberAntibacterial activity
The invention relates to a preparation method of an antimicrobial active packaging film loaded with a cinnamyl aldehyde essential oil. The preparation method comprises the following steps of 1, takinga mixed solution obtained from absolute ethyl alcohol and purified water with a volume proportion of 1:1, weighting and taking a certain amount of polyving akohol and zeolite and adding into the mixed solution, conducting magnetic stirring under 80-95 DEG C, obtaining polyving akohol / zeolite dispersion liquids after stirring, adding the cinnamyl aldehyde essential oil, continuing to stir until the solution is in a subtransparent milk white state, stopping stirring, conducting sufficient standing in ultrasound or indoor temperature, eliminating small bubbles in the solution to obtain a spinning solution; 2, taking the spinning solution prepared in the step 1 to conduct electrostatic spinning so as to obtain a superfine fiber film, picking off the fiber film from an aluminum foil, wherein the fiber film is the antimicrobial active packaging film. The antimicrobial active packaging film has a good tensile property, is loaded with the cinnamyl aldehyde essential oil through mesoporous absorption, so that the load quantity of the cinnamyl aldehyde essential oil is larger, and the antimicrobial active packaging film is more applicable to low temperature scene release.
Owner:ZHEJIANG UNIV OF TECH
Active packaging
InactiveUS20060278996A1Easy to shapeSemiconductor/solid-state device detailsSolid-state devicesLow speedElectrical connection
A method involves stacking a first chip, comprising high-speed circuitry formed using a first fabrication process, together with a wafer comprising multiple iterations of low-speed circuitry formed using a second fabrication process, hybridizing the first chip to the wafer so as to form electrical connections between the first chip and one of the iterations of the low-speed circuitry so as to form a hybridized unit and dicing the unit from the wafer.
Owner:CUFER ASSET LTD LLC
Aqueous printable electrical conductors (XINK)
InactiveUS20090314529A1Polymer resin contentPromote stability of metalConductive materialInksCarbamateElectrical conductor
An aqueous printable electrical conductor (APEC) is defined as a dispersion comprising metal powder (with specific surface properties) dispersed into an aqueous acrylic, styrene / acrylic, urethane / acrylic, natural polymers vehicle (gelatine, soy protein, casein, starch or similar) or in a film forming reactive fatty acids mixture without a binder resin. The aqueous printable dispersion can be applied to substrates through different printing processes such as flexography, gravure, screen, dry offset or others. Exemplary substrates include: (1) coated paper, (2) uncoated paper, and (3) a variety of plastics with treated and untreated surfaces. When printed at a thickness of 1-8 μm, heating to cure is not required as the dispersion cures at ambient temperatures. When the dispersion is used for any of the above applications it will provide sufficient electrical conductivity to produce electrical circuits for intelligent and active packaging, sensors, radio frequency identification (RFID) tag antennae, and other electronic applications.
Owner:PETERSEN +3
Coaxial active packaging structure of electric absorption modulation sealed laser
PendingCN109546526AReduced Placement Accuracy RequirementsReduce the difficulty of couplingLaser detailsCoupling light guidesElectricityCoupling
The invention relates to the technical field of optical fiber communication, and specifically relates to a coaxial active packaging structure of an electric absorption modulation sealed laser. The coaxial active packaging structure of an electric absorption modulation sealed laser is characterized in that an electric absorption modulation laser chip and a reflective prism of the package structureare integrated on the upper surface of the heat sink inside the tube body, and the tube holder is not required for inversion during processing, thus reducing the process difficulty; and the top, awayfrom a conductive metal foot, of a cap-shaped metal casing of the tube body is provided with an adjustable metal seat of an annular sleeve structure, and a lens is inserted in an annular sleeve of theadjustable metal seat and the relative positions of the two are adjustable. The coaxial active packaging structure of the electric absorption modulation sealed laser adopts the lens separated from the tube body, and does not need to mount a light-transmitting slide plate inside the tube body, thereby reducing the patch accuracy requirement for the electric absorption modulation laser chip. Besides, as the lens can adjust the relative distance and position of the reflective prism through the adjustable metal seat, the coupling difficulty of the lens can be reduced on the active coupling.
Owner:GUANGDONG RUIGU OPTICAL NETWORK COMM CO LTD
Polylactic acid-polypyrrole/silver composite antibacterial film and preparation method thereof
ActiveCN109369941AAntibacterial effectAchieve antibacterial effectAntifouling/underwater paintsPaints with biocidesPolypyrroleMolecular materials
The invention provides a preparation method of a polylactic acid-polypyrrole / silver composite antibacterial film and relates to the technical field of polymer materials. The preparation method comprises the steps: acquiring a PLA film; preparing an AgNO3 aqueous solution, and placing the PLA film into the AgNO3 aqueous solution to carry out soaking and adsorption; and preparing a Py monomer solution, pouring the Py monomer solution into a mixed solution, and triggering a Py monomer to be subjected to an oxidative polymerization reaction on the surface of the PLA film by Ag<3+> to obtain the composite antibacterial film. The composite antibacterial film has excellent heat stability and antibacterial properties. In addition, the invention further relates to the polylactic acid-polypyrrole / silver composite antibacterial film comprising a PLA film matrix and a surface PPy / Ag composite antibacterial coating covering the PLA film matrix. The polylactic acid-polypyrrole / silver composite antibacterial film is simple in preparation method and low in cost and has a certain research significance in the field of PLA active packaging.
Owner:XIAMEN AMESON NEW MATERIAL INC
High-barrier antibacterial composite film based on nano cellulose/MXene immobilized nano silver as well as preparation method and application thereof
The invention discloses a high-barrier antibacterial composite film based on nano cellulose / MXene immobilized nano silver and a preparation method thereof. The method comprises the following steps: adopting tea polyphenol as a reducing agent to prepare nano silver, taking MXene as a template to fix nano silver, and preparing the MXene immobilized nano silver composite antibacterial agent; and adding the MXene immobilized nano silver composite antibacterial agent into nano cellulose, and taking glycerol as a plasticizer to obtain the nano cellulose / MXene immobilized nano silver composite film. The oxygen permeability of the composite film is only 0.04 cm<3> / m<2>. 24h. 0.1 MPa and is far lower than that of a common PE preservative film (48.59 cm<3> / m<2>. 24h. 0.1 MPa, the reference standard is GB / T 1038), and the composite film has a high barrier property; and the composite film has an antibacterial performance, can effectively inhibit the growth of pathogenic bacteria, prolongs the shelf life of food, and meets the requirements of modern food active packaging.
Owner:SOUTH CHINA UNIV OF TECH
Responsive slow-release active packaging film as well as preparation method and application thereof
PendingCN111995785ASolve the incentive mechanismGuaranteed active efficacyFlexible coversWrappersPolymer scienceMagnetite Nanoparticles
The invention provides a responsive slow-release active packaging film as well as a preparation method and an application thereof. The active packaging film is of a multi-layer structure formed by compounding an inner layer, a middle layer and an outer layer, the inner layer is a gelatin film containing magnetite nanoparticles and has a magnetic field response function, the middle layer is a gelatin film containing a water-soluble antibacterial agent or a water-soluble antioxidant, and the outer layer is a common polymer film. The invention discloses a packaging film. Under the action of an external magnetic field, the permeability of the inner layer of the film can be changed, release of active substances of the middle layer is stimulated, the active film is in a releasable state only after being packaged and used, the active effect of the prepared film is effectively guaranteed, and the film is applied to food packaging and more beneficial to food protection and food shelf life prolonging. Therefore, the packaging film solves the problem of an excitation mechanism of an active film, so that the packaging film is in a controllable state in the whole circulation use process.
Owner:SHANGHAI OCEAN UNIV
Preparation method of bacteriostatic cationic nanofibrillated cellulose
The invention discloses a preparation method of bacteriostatic cationic nanofibrillated cellulose (Q-NFC). According to the method disclosed by the invention, quaternization pretreatment is carried out on cellulose slurry with a water content of 15-50% under a room-temperature and alkaline condition, the pH value of the reaction system is neutralized to be neutral by using an alcohol solution dissolved with a natural antibacterial organic acid, and finally mechanical treatment is carried out to obtain a bacteriostatic nanofibrillated cellulose (NFC) water dispersion liquid. The preparation method of the bacteriostatic NFC is mild and efficient, and active organic acid bacteriostatic groups with negative charges are bonded on the surface of cationic microfibers in a mode of ionic bonds, sothat the prepared bacteriostatic NFC has a good bacteriostatic effect, and the bacteriostasis rate to staphylococcus aureus can be up to 99% or above. The bacteriostatic Q-NFC retains the original advantages of natural toxicity, degradability, high transparency, good thermal stability and the like of NFC, and also has the advantages that active bacteriostatic components cannot be dissolved out easily and the like, so that the bacteriostatic Q-NFC can be applied to the fields of bacteriostatic active packaging, functional textile materials and the like.
Owner:ZHEJIANG FORESTRY UNIVERSITY
Antibacterial active packaging material and preparation technology thereof
The invention discloses an antibacterial active packaging material and a preparation technology thereof. The packaging material is composed of a base material and an antibacterial agent, wherein the antibacterial agent is prepared from the following components: naringin, monopotassium glycyrrhizinate, rosa laevigate michx brown, beta-apo-8'-carotenealdehyde, mesoporous carbon, corosolic acid and compound essential oil; the base material is prepared from starch, bamboo powder, vermiculite powder, bauxite, polylactic acid, polyethylene glycol, modified coconut fibers, ammonium persulfate-sodiumhydrogen sulfite and ethanol. The packaging material prepared by the preparation technology has wide antibacterial performance, and the tensile strength and the elongation at break have a relatively excellent level, so that the antibacterial agent has relatively good adaptability with the base material. Moreover, raw materials of the packaging material are green and safe; the antibacterial performance lasting time can reach 30 months or longer and the antibacterial active packaging material has a very good application prospect.
Owner:SUZHOU FUZHONG PLASTIC CO LTD
Automatic trash can
InactiveCN109319341AReduce the impact of corruptionPacking initiativeRefuse receptaclesLitterControl system
The invention discloses an automatic trash can. The automatic trash can comprises an automatic packaging and bagging device and a control system arranged in a trash can body, and is characterized in that the control system comprises a master control unit, a detecting sensor used for detecting the filling state of the trash can, an active packaging button and a display screen arranged on an external shell of the trash can; the input end of the master control unit is connected with the detecting sensor and the active packaging button; and the output end of the active control unit is connected with the automatic packaging and bagging device and the display screen. The automatic trash can has the beneficial effects that the trash can not only can perform automatic packaging after trash fillingis automatically detected, and but also can perform active packaging according to the control button, the using experience is improved, it is reduced that due to the fact that the trash can is not full of trash for a long time and consequently the trash is rotted in the can and the environment is affected, and active packaging is achieved through the active button.
Owner:ANHUI POLYTECHNIC UNIV MECHANICAL & ELECTRICAL COLLEGE
Oxygen-absorbing active packaging cooking film
InactiveCN108357174AImprove heat resistanceEffective absorptionSynthetic resin layered productsDomestic containersMasterbatchElastomer
The invention discloses an oxygen-absorbing active packaging cooking film. The film is of a three-layer composite structure, i.e., an outer surface layer, an intermediate layer and a heat sealing layer from exterior to interior, wherein the outer surface layer is composed of block-copolymerized polypropylene, polyolefin elastomer and an anti-sticking agent; the intermediate layer is prepared fromblock-copolymerized polypropylene, iron-containing oxygen-absorbing masterbatch and synthetic silica; and the heat sealing layer is made of random-copolymerized polypropylene, iron-containing oxygen-absorbing masterbatch and synthetic silica. The film prepared in the invention is transparent overally and does not affect the customer's visual sensation of packaged contents; the film has strong barrier properties and can effectively absorb residual or infiltrated oxygen in the package, so the risk of oxidative deterioration of food is lowered, the color, taste and nutritional value of food are ensured, the shelf life of food is prolonged, and the usage amount of preservatives is effectively reduced; in addition, the film of the invention has good heat resistance and can fully meet the requirements of cooking sterilization at 121 DEG C.
Owner:安徽双津实业有限公司
Origanum vulgare essential oil-carboxymethyl cellulose degradable active packaging film
InactiveCN109535488AImprove antioxidant capacityImprove bindingFlexible coversWrappersEscherichia coliGlycerol
The invention discloses an origanum vulgare essential oil-carboxymethyl cellulose degradable active packaging film. The packaging film is prepared by the following steps: taking carboxymethyl cellulose as a raw material to prepare a film liquid with water and glycerol, adding origanum vulgare essential oil and a tween mixed solution into the film liquid, carrying out homogenizing to obtain a film-forming base solution, and carrying out tape casting on the film-forming base solution to obtain the packaging film. According to the invention, the origanum vulgare essential oil is added into a carboxymethyl cellulose film, and the combination of the essential oil with the carboxymethyl cellulose is improved through addition of the tween, so that the surface and the internal structure of the film are changed; micropores are increased, and then the essential oil can be slowly released from the film to exert activity, so that the film sample has obvious oxidation resistance, and the inhibitioncapability on growth of escherichia coli and staphylococcus aureus is remarkably improved. The origanum vulgare essential oil-carboxymethyl cellulose degradable active packaging film provided by theinvention can maintain good mechanical properties, is applied to food storage and fresh keeping, and is used as an inner package to coat meat products, the pH value and the surface color of the meat products are kept stable during storage, and oxidation of fat and growth and propagation of microorganisms can be effectively inhibited.
Owner:NANJING AGRICULTURAL UNIVERSITY
Preparation method of antibacterial preservative film loaded with nanoscale essential oil
PendingCN113045785AGood sustained release effectImprove performanceCyclodextrinAntibacterial activity
The invention provides a preparation method of an antibacterial preservative film loaded with nanoscale essential oil. The preparation method comprises the following steps: preparing an O / W type Pickering emulsion with high stability and high essential oil content from cyclodextrin, uniformly mixing the emulsion with a water-based chitosan film matrix, and preparing the antibacterial film with uniformly distributed essential oil through a tape casting method. The essential oil antibacterial film is uniform in texture, is colorless, semitransparent or yellowish and semitransparent according to the amount of essential oil, has certain mechanical properties, can be directly made into a film for use or used for coating the inner surface of a packaging material or the surface of food, can slowly release the antibacterial essential oil, is used for packaging food to achieve the purpose of prolonging the shelf life, and is a novel nano-antibacterial active packaging material for slow-release food.
Owner:ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
Stress fresh-keeping method and flexible package suitable for thin-skin grape storage and transportation
PendingCN112514984AGuaranteed freshRealize dynamic storage and transportation fracturing and other difficult problemsContainers preventing decayPackaging fruits/vegetablesMicroorganismVitis vinifera
The invention relates to a stress fresh-keeping method and flexible package suitable for thin-skin grape storage and transportation. The method comprises the following steps of (1) spraying a litsea cubeba essential oil and microbial bacterial antagonist compound fresh-keeping bacteriostatic agent to grape clusters before picking; (2) performing selection and sorting for 3 hours, performing treatment with CO2 with the concentration of 60-80% in a large fresh-keeping tent for 20-30 minutes, and controlling the O2 concentration to be 3-5%; (3) performing ventilation and pre-cooling at the temperature of 0+ / -2 DEG C for 24-36 hours, and carrying out MAP static storage; (4) performing gradient heating treatment for storage and delivery; and (5) after delivery, performing dynamic storage and transportation on grapes by adopting flexible packages of bag-in-bag active packaging bags. According to the invention, the design is scientific and reasonable, and the structure is simple; the fresh fruit stress reaction is started through short-time stimulation of high-concentration gas; the technical problems of pressing crack of the thin-skin grapes in dynamic storage and transportation and thelike are solved through gradient temperature rise and flexible packaging in combination with a flexible packaging material; the dynamic transportation pressing crack rate of the thin-skin grapes withthe thickness smaller than 0.219 mm is lower than 3%; and by adopting the technology, the thin-skin grapes are preserved for 30-40 days, and the good fruit degree is 95% or above.
Owner:TIANJIN UNIV OF SCI & TECH
Ion sequestering active packaging materials
Owner:UNIV OF MASSACHUSETTS
Aqueous printable electrical conductors
InactiveCN101208757ANon-conductive material with dispersed conductive materialCable/conductor manufactureElectrical conductorFatty acid
An aqueous printable electrical conductor (APEC) is defined as a dispersion comprising metal powder (with specific surface properties) dispersed into an aqueous acrylic, styrene / acrylic, urethane / acrylic, natural polymers vehicle (gelatine, soy protein, casein, starch or similar) or in a film forming reactive fatty acids mixture without a binder resin. The aqueous printable dispersion can be applied to substrates through different printing processes such as flexography, gravure, screen, dry offset or others. Exemplary substrates include: (1) coated paper, (2) uncoated paper, and (3) a variety of plastics with treated and untreated surfaces. When printed at a thickness of 1-8 [mu]m, heating to cure is not required as the dispersion cures at ambient temperatures. When the dispersion is used for any of the above applications it will provide sufficient electrical conductivity to produce electrical circuits for intelligent and active packaging, sensors, radio frequency identification (RFID) tag antennae, and other electronic applications.
Owner:NAT STARCH & CHEM INVESTMENT HLDG CORP
Lignin nanoparticle/polyvinyl alcohol/chitosan ternary composite material as well as preparation method and application thereof
ActiveCN113652047AImprove mechanical propertiesGood opticsPaper coatingPaper/cardboardPolymer sciencePolyvinyl alcohol
Owner:ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
Ion sequestering active packaging materials
ActiveUS20140316011A1Avoid lostInhibiting color lossMilk preparationPharmaceutical containersChemical compoundChemical products
The invention described herein provides a modified material is a packaging material in which, at least one side, the product contact side, has been modified to sequester ions in order to prevent the ions from being available to promote degradative reactions in biological or chemical products such as food, beverages, pharmaceuticals, neutraceuticals, cosmetics, paints and chemicals. The invention described herein also includes methods of making the packaging materials and methods of using the packaging materials for preserving the integrity of biological and chemical compounds.
Owner:UNIV OF MASSACHUSETTS
3D bacteriostatic absorbent aerogel for cold fresh meat palletizing and preparation method and application of 3D bacteriostatic absorbent aerogel
ActiveCN110846726AGood biocompatibilityImprove securityElectro-spinningMonocomponent synthetic polymer artificial filamentPolyvinyl alcoholAnti bacteria
The invention discloses a 3D bacteriostatic absorbent aerogel for cold fresh meat palletizing and a preparation method of the 3D bacteriostatic absorbent aerogel. The method comprises the following steps: adding a cinnamaldehyde ethanol solution into a mixed solution of polyvinyl alcohol and citric acid, preparing a polyvinyl alcohol-based bacteriostatic water absorption pad through an electrostatic spinning technology, and then heating, homogenizing and freeze-drying the polyvinyl alcohol nanofiber pad to become a hydrophobic polyvinyl alcohol-based bacteriostatic water absorption pad. The nanofiber pad prepared according to the invention has high water absorption and antibacterial properties, and is superior to an existing cold fresh meat water absorption pad in functionality, and a newidea is provided for active packaging of foods. In addition, polyvinyl alcohol can be completely degraded, is an environment-friendly packaging material, and accords with the development trend of green ecology. The hydrophobic polyvinyl alcohol-based bacteriostatic food water absorption pad prepared by the invention can be used in a packaging box for fresh meat, the sensory characteristics of thecold fresh meat can be improved, and furthermore, an effect of prolonging the shelf life can be achieved.
Owner:NORTHEAST AGRICULTURAL UNIVERSITY
Edible natural apple essence sustained-release liposome and preparation method thereof
The invention provides an edible natural apple essence sustained-release liposome and a preparation method thereof. The liposome is prepared from soybean lecithin as a wall material, cholesterol as awall material structure regulator, and natural apple essence as an embedded core material. According to the invention, the natural apple essence is embedded into vesicles formed by liposomes, so thatthe slow release of the natural apple essence in the using process is realized. Compared with the prior art, the edible natural apple essence sustained-release liposome and the method have the following beneficial effects: 1, the method has few operation steps, is simple and efficient, and is beneficial to the popularization of the technology and the large-scale production of industrialization; 2,the edible natural apple essence liposome prepared by the method has stable properties, and is convenient for long-term storage, transportation and application; and 3, the edible natural apple essence liposome prepared by the method can be used for the preparation of active packaging materials of fresh-cut fruits and vegetables, particularly for the flavor regulation and control of fresh-cut apple packaging, and can effectively make up the flavor loss of the fresh-cut fruits and vegetables and improve the product quality.
Owner:SHANGHAI JIAO TONG UNIV
Antibacterial fresh-keeping composite freeze-thawed edible film for chilled fresh meat and preparation method thereof
ActiveCN111925541AImprove mechanical propertiesDelay quality deteriorationFlexible coversWrappersBiotechnologyCALCIUM LACTOBIONATE
The invention relates to the technical field of food active packaging films, in particular to an antibacterial fresh-keeping composite freeze-thawed edible film for chilled fresh meat, a preparation method of the antibacterial fresh-keeping composite freeze-thawed edible film and an application method of the antibacterial fresh-keeping composite freeze-thawed edible film in chilled fresh meat fresh keeping and color protection. The main process parameters are as follows: freezing and thawing is performed for three times, the concentration of calcium lactate is 3%, calcification is performed for 6 minutes, sodium alginate addition amount is 60%, and the tensile strength of the sodium alginate / hyaluronic acid composite film obtained under the condition is 10.41 MPa. The main technical purposes are that excellent renewable natural macromolecular sodium alginate and hyaluronic acid are used as film-forming base materials, the cross-linking agent calcium lactate with a color protection effect is added to produce an active packaging film, the mechanical property of the film is improved through physical treatment of freeze thawing, a green, safe and degradable composite edible film is prepared, the quality deterioration process of the chilled meat in the cold storage process can be effectively delayed, and the edible quality of the chilled meat is kept.
Owner:GANSU AGRI UNIV +1
Antimicrobial and antioxidant oxidized nanocellulose composite film immobilizing nano silver/grape seed extract and preparation method and application thereof
The invention discloses an antimicrobial and antioxidant oxidized nanocellulose composite film immobilizing a nano silver / grape seed extract and a preparation method thereof. The composite film adopts the grape seed extract as a reducing agent to prepare the nano silver and oxidized nanocellulose as a template to immobilize the nano silver, so as to prepare and obtain an oxidized nanocellulose composite antimicrobial agent immobilizing the nano silver; and then the oxidized nanocellulose which is taken as a film forming matrix, the grape seed extract which is taken as an antioxidant agent andglycerol which is taken as a plasticizer are mixed with the oxidized nanocellulose composite antimicrobial agent immobilizing the nano silver for preparing the composite film. The composite film andthe preparation method have the advantages that the accumulative releasing rate of the nano silver in the prepared composite film reaches 0.6-6 wt%, thereby being applicable to food packaging; the nano silver particles playing the antimicrobial function do not leak and overflow into foods, thereby greatly reducing the toxicity and the potential hazards of the nana silver particles when being applied to foods; and the composite film possesses an antioxidant function, thereby preventing lipid foods and the like from being oxidized and getting rancid and satisfying the requirements for modern food active packaging.
Owner:SOUTH CHINA UNIV OF TECH
Preparation method of PPy (polypyrrole)-PCL (polycaprolactone) antibacterial nanocomposite film
The invention provides a preparation method of a PPy (polypyrrole)-PCL (polycaprolactone) antibacterial nanocomposite film. The preparation method comprises steps as follows: PPy surface modified LDHs(layered double hydroxides) clay antibacterial powder (LDHs@PPy) is obtained from PPy coated LDHs clay formed through a chemical oxidation reaction of Py (pyrrole) on the surface of the LDHs clay under the initiation function of soluble Fe<3+> salt; then, a LDHs@PPy / PCL nanocomposite film is prepared from LDHs@PPy and PCL through solution pouring. The interfacial compatibility and the binding force between LDHs and a substrate PCL are increased by a surface organic coating PPy, the blocking property, the mechanical performance and the like of the final nanocomposite are improved, the composite film is endowed with antibacterial performance, and the application of the surface modified LDHs clay / bio-based polymer composite in the field of active packaging is finally extended. The preparation method is simple and is suitable for large-scale production, and conditions are easy to control.
Owner:XIAMEN UNIV OF TECH
Roast duck fresh-keeping method
PendingCN111543473AInhibition of reproductionImprove freshnessGaseous food ingredientsMeat/fish preservation by freezing/coolingBiotechnologyFood industry
The invention discloses a roast duck fresh-keeping method, which belongs to the technical field of food fresh keeping, and comprises the following steps: dipping sliced roast ducks in a chitosan solution containing 0.1-0.8% of cinnamon essential oil and having a mass fraction of 0.1%, draining, immediately carrying out modified atmosphere packaging, and carrying out dark storage at a temperature of 0-4 DEG C. Through detection, the cinnamon essential oil and the chitosan coating are combined for use, so that the growth of microorganisms in the roast ducks can be effectively inhibited, the oxidation rate of fat is reduced, the shelf life of the roast ducks can be prolonged by more than 7 days, the inhibition effect is enhanced along with the increase of the concentration of the essential oil, and adverse effects on the color and luster of the roast ducks are avoided. The edible coating can be applied to fresh keeping of roast ducks as an active packaging material, and has a good application prospect in the food industry.
Owner:SHANDONG AGRICULTURAL UNIVERSITY
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