CN110835457A - Full-biomass porous material slow-release antibacterial active preservative film and preparation method thereof - Google Patents
Full-biomass porous material slow-release antibacterial active preservative film and preparation method thereof Download PDFInfo
- Publication number
- CN110835457A CN110835457A CN201911118726.4A CN201911118726A CN110835457A CN 110835457 A CN110835457 A CN 110835457A CN 201911118726 A CN201911118726 A CN 201911118726A CN 110835457 A CN110835457 A CN 110835457A
- Authority
- CN
- China
- Prior art keywords
- porous material
- antibacterial agent
- preservative film
- antibacterial
- full
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2300/00—Characterised by the use of unspecified polymers
- C08J2300/16—Biodegradable polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2400/00—Characterised by the use of unspecified polymers
- C08J2400/16—Biodegradable polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/015—Biocides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
- C08K5/0058—Biocides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/132—Phenols containing keto groups, e.g. benzophenones
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/29—Compounds containing one or more carbon-to-nitrogen double bonds
- C08K5/31—Guanidine; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/12—Adsorbed ingredients, e.g. ingredients on carriers
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
本发明提供一种全生物质多孔材料缓释抗菌活性保鲜膜及其制备方法。所述全生物质多孔材料缓释抗菌活性保鲜膜包括下述重量百分比的原料：基体树脂35‑45％，生物多孔物质30‑40％，抗菌剂20‑25％，加工助剂0.9‑1.3％。其制备方法包括将生物多孔物质和抗菌剂混合，使生物多孔物质充分吸附抗菌剂，再与基体树脂、加工助剂混合造粒，再流延制备即得。菌丝、石榴皮、柚子皮、柑橘皮、树皮、秸秆均为多孔性物质，可有效对活性抗菌剂进行吸附，从而达到活性抗菌剂的缓释效果，提高薄膜性能，从而实现对羊肉的长期抗菌作用，同时原料均为可降解物质，可解决农业副产物的污染问题和塑料包装的“白色污染”问题，提高农产品的附加值。
The invention provides an all-biomass porous material slow-release antibacterial active fresh-keeping film and a preparation method thereof. The all-biomass porous material slow-release antibacterial active fresh-keeping film includes the following raw materials by weight: 35-45% of matrix resin, 30-40% of biological porous material, 20-25% of antibacterial agent, and 0.9-1.3% of processing aid . The preparation method includes mixing the biological porous material and the antibacterial agent, so that the biological porous material fully absorbs the antibacterial agent, and then is mixed with a matrix resin and a processing aid for granulation, and is then prepared by casting. Mycelium, pomegranate peel, grapefruit peel, citrus peel, bark, and straw are all porous substances, which can effectively adsorb active antibacterial agents, so as to achieve the slow release effect of active antibacterial agents and improve film performance, so as to achieve the effect of mutton. Long-term antibacterial effect, and the raw materials are all degradable substances, which can solve the pollution problem of agricultural by-products and the "white pollution" problem of plastic packaging, and improve the added value of agricultural products.
Description
Technical Field
The invention relates to the field of freshness protection packaging, in particular to a full-biomass porous material slow-release antibacterial active freshness protection film and a preparation method thereof.
Background
Active antibacterial packaging is a novel packaging technology and has an increasingly important position in the fields of food preservation and product safety. Active antimicrobial packages currently achieve their effect mostly by spraying, coating or adding functional antimicrobial substances directly onto the packaging film material. The added antibacterial substance is mostly directly added on the surface layer or inside the film, is easily interfered by external adverse factors, and volatilizes fast, so that the fresh-keeping effect is difficult to be played for a long time. The biodegradable natural macromolecular substance is selected as the base material of the active packaging film, and natural functional components are added into the base material to be used as active substances to prepare the active packaging film material with specified functions.
Disclosure of Invention
The invention aims to solve the technical problem of providing a full-biomass porous material slow-release antibacterial active preservative film and a preparation method thereof. The prepared preservative film can effectively adsorb the active antibacterial agent, so that the slow release effect of the active antibacterial agent is achieved, the performance of the film is improved, the long-term antibacterial effect is realized, meanwhile, the raw materials are degradable substances, the pollution problem of agricultural byproducts and the white pollution problem of plastic packaging can be solved, and the added value of agricultural products is improved.
The invention is realized by the following technical scheme:
the invention provides a full-biomass porous material slow-release antibacterial active preservative film which comprises the following raw materials in percentage by weight: 35-45% of matrix resin, 30-40% of biological porous substance, 20-25% of antibacterial agent and 0.9-1.3% of processing aid.
The matrix resin is one or a mixture of polylactic acid (PLA), polybutylene succinate (PBS), polybutylene adipate/terephthalate (PBAT) and Polyhydroxyalkanoate (PHA).
The antibacterial agent comprises a biguanide antibacterial agent and/or a natural plant antibacterial agent.
Preferably, the antibacterial agent is a mixture of a biguanide antibacterial agent and a natural plant antibacterial agent, wherein the mass ratio of the biguanide antibacterial agent to the natural plant antibacterial agent is 1: 3-3: 1.
the biguanide antibacterial agent comprises one or more of dodecyl guanidine, 2, 3-alkylguanidine, 1- (3-chloro-4-heptyloxyphenyl) biguanide, 1, 6-bis [ 4-chlorophenyl biguanide ] hexane and biguanide octoate.
The natural plant antibacterial agent comprises one or more of herba plantaginis extract, flos Lonicerae extract, folium Ginkgo extract, eugenol, and curcumin.
The biological porous substance is prepared by the following method: washing the biological raw material with distilled water, drying at 70-90 ℃ to constant weight, crushing, and sieving with a 120-200 mesh sieve to obtain the biological porous substance. Preferably, the material is sieved through a 160-mesh sieve.
The biological raw material is one or a mixture of more of hypha, pericarp, bark or straw. The pericarp is one or more of pericarpium Granati, pericarpium Citri Grandis, and mandarin orange peel.
The processing aid comprises a chain extender and an antioxidant, wherein the mass ratio of the chain extender to the antioxidant is 1: (0.1-0.3).
Further, the processing aids are a chain extender ADR4300 and an antioxidant 245.
The invention also provides a preparation method of the full-biomass porous material slow-release antibacterial active preservative film, which comprises the steps of mixing the biological porous material and the antibacterial agent to enable the biological porous material to fully adsorb the antibacterial agent, mixing the biological porous material with matrix resin and a processing aid for granulation, and carrying out casting to obtain the full-biomass porous material slow-release antibacterial active preservative film. Preferably, the biological porous substance and the antibacterial agent are mixed and stirred or oscillated for 5min to 2h to ensure that the biological porous substance fully adsorbs the antibacterial agent.
The granulation adopts a double-screw extruder, and seven heating zones are sequentially arranged from an inlet to an outlet of the double-screw extruder during granulation, wherein the heating temperature of the first zone is 160-170 ℃, the heating temperature of the second zone is 170-180 ℃, the heating temperature of the third zone is 170-180 ℃, the heating temperature of the fourth zone is 180-190 ℃, the heating temperature of the fifth zone is 175-185 ℃, the heating temperature of the sixth zone is 175-185 ℃, the heating temperature of the seventh zone is 175-185 ℃, and the screw rotation speed of the double-screw extruder is 70-90 r/min.
The casting adopts a casting machine, preferably a multilayer co-extrusion casting machine, and the temperature of each zone during casting is respectively as follows: the first zone is 175-185 ℃, the second zone is 175-185 ℃, the third zone is 175-185 ℃, the fourth zone is 185-195 ℃, the fifth zone is 180-190 ℃, the sixth zone is 180-190 ℃, the seventh zone is 180-190 ℃, and the rotating speed of the casting machine is 40-50 r/min.
In the invention, the plantain herb extract, the honeysuckle flower extract and the ginkgo leaf extract can be commercially available or prepared by the following method.
The plantain herb extract is prepared by the following method: mixing plantain herb and ethanol with the volume fraction of 70% according to the solid-to-liquid ratio of 1 g: (8-12) mL, extracting under reflux at 75-85 deg.C for 2 times, each for 1-2 hr, filtering, mixing the filtrates to obtain mixed folium Nelumbinis solution, adding equal volume of distilled water into the mixed solution, filtering with 0.20 μm filter membrane, and vacuum drying the filtrate at 55-65 deg.C to constant weight.
The honeysuckle extract is prepared by adopting the following method: mixing honeysuckle and distilled water according to a solid-to-liquid ratio of 1 g: (8-12) mL, extracting under reflux at 90-100 deg.C for 2 times, each for 1-2 hr, filtering, mixing filtrates, filtering with 0.20 μm filter membrane, and vacuum drying at 55-65 deg.C to constant weight.
The ginkgo leaf extract is prepared by the following method: mixing ginkgo leaves and pure water according to a solid-liquid ratio of 1 g: (25-35) mL, soaking at normal temperature for 0.5-1.5h, extracting under reflux at 85-95 deg.C for 3 times, each for 1-3h, combining 3 extractive solutions, centrifuging at 3500r/min for 20min, concentrating the supernatant at 55-65 deg.C to 10-15% of the supernatant volume, adding anhydrous ethanol to make ethanol volume fraction 75%, standing at 3-5 deg.C for 10-15h, centrifuging at 3500r/min for 20min, washing the precipitate with anhydrous ethanol, acetone and diethyl ether, and vacuum drying at 55-65 deg.C to constant weight to obtain folium Ginkgo extract.
The invention has the beneficial effects that:
(1) compared with the common antibacterial package in which the antibacterial substance is directly added into the resin substrate, hypha, pomegranate peel, shaddock peel, bark and straw are all porous substances and can effectively adsorb the active antibacterial agent, so that the slow release effect of the active antibacterial agent is achieved, and the long-term antibacterial effect on mutton is realized;
(2) hypha, pomegranate rind, shaddock peel, orange peel, bark or straw are easy to be mixed with resin to be processed into a film, so that the water vapor permeability of the film is effectively improved, the gas permeability of the film is reduced, and the effect of resisting bacteria and keeping freshness of mutton for a long time is realized;
(3) pomegranate rind, shaddock peel, citrus peel, bark or straw are used as agricultural byproducts, the yield is high, the utilization rate is low, the sources of the pomegranate rind, the shaddock peel, the citrus peel, the bark or the straw are wide, the pomegranate rind, the shaddock peel, the citrus peel, the bark or the straw belong to recyclable green natural substances, and when the pomegranate rind, the shaddock peel, the bark or the straw are applied to food packaging, the pollution problem of the pomegranate rind, the shad;
(4) hypha, pomegranate rind, shaddock peel, bark or straw are used as completely degradable substances to be combined with degradable resin to prepare the completely degradable mutton fresh-keeping active package, so that the mutton fresh-keeping packaging problem can be solved, the added value of agricultural products can be effectively improved, and the problem of white pollution of plastic packaging is solved.
Drawings
FIG. 1 is a graph showing the influence of preservative films on the change of weight loss rate of blueberries.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described below clearly and completely, and it is obvious that the described embodiments are some, not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Curcumin was purchased from national drug group chemical agents, ltd.
Dodecyl guanidine and 1- (3-chloro-4-heptyloxyphenyl) biguanide were purchased from national drug group chemical agents, Inc.
Polylactic acid 4032D manufactured by NatureWorks, USA, was used.
The plantain herb extract is prepared by the following method: mixing plantain herb and ethanol with the volume fraction of 70% according to the solid-to-liquid ratio of 1 g: mixing 10mL of the mixture, extracting for 2 times at 80 ℃ under reflux, each time for 1.5 hours, filtering, combining the two filtrates to obtain a mixed lotus leaf solution, adding equal volume of distilled water into the mixed solution, filtering with a 0.20 mu m filter membrane, and drying the filtrate at 60 ℃ in vacuum to constant weight to obtain the product.
Example 1
The preparation method of the full-biomass porous material slow-release antibacterial active preservative film comprises the following steps:
(1) washing biological raw material shaddock peel with distilled water, drying at 80 ℃ for 24 hours to constant weight, cooling to normal temperature, crushing with a crusher, and sieving with a 160-mesh sieve to obtain a biological porous substance;
(2) mixing and stirring the biological porous substance and the antibacterial agent in proportion for 10min to enable the biological porous substance to fully adsorb the antibacterial agent to obtain a mixed material;
(3) uniformly mixing resin base material polylactic acid, chain extender ADR4300, antioxidant 245 and the mixture obtained in the step (2) in proportion (shown in table 1), and extruding and granulating by using a double-screw extruder to obtain resin master batches, wherein the double-screw extruder is sequentially provided with seven heating zones from an inlet to an outlet, the heating temperature of a first zone is 165 ℃, the heating temperature of a second zone is 175 ℃, the heating temperature of a third zone is 175 ℃, the heating temperature of a fourth zone is 185 ℃, the heating temperature of a fifth zone is 180 ℃, the heating temperature of a sixth zone is 180 ℃, the heating temperature of a seventh zone is 180 ℃, and the screw rotation speed of the double-screw extruder is 60 r/min;
(4) adding the resin master batch into a multi-layer co-extrusion casting machine for casting, wherein the temperature of each point during casting is respectively as follows: the first zone is 180 ℃, the second zone is 180 ℃, the third zone is 180 ℃, the fourth zone is 190 ℃, the fifth zone is 185 ℃, the sixth zone is 185 ℃, the seventh zone is 185 ℃, the rotating speed of the multilayer co-extrusion casting machine is 45r/min, and the full-biomass porous material slow-release antibacterial activity preservative film is obtained.
The antibacterial agent comprises a biguanide antibacterial agent and a natural plant antibacterial agent.
The mass ratio of the biguanide antibacterial agent to the natural plant antibacterial agent is 1: 3.
The biguanide antibacterial agent comprises a mixture of dodecyl guanidine and 1- (3-chloro-4-heptyloxyphenyl) biguanide according to a mass ratio of 1: 1.
The natural plant antibacterial agent comprises a mixture of plantain herb extract and curcumin in a mass ratio of 1: 1.
The processing aids comprise a chain extender ADR4300 and an antioxidant 245.
The raw materials and the amounts thereof in example 1 are shown in Table 1.
TABLE 1 raw materials and dosage of slow-release antibacterial active preservative film made of full-biomass porous material
Comparative example 1
The preparation method of the preservative film comprises the following steps:
(1) uniformly mixing resin base material polylactic acid, a chain extender ADR4300 and an antioxidant 245 in proportion, and then extruding and granulating through a double-screw extruder to obtain resin master batches, wherein the double-screw extruder is sequentially provided with seven heating zones from an inlet to an outlet, the heating temperature of a first zone is 165 ℃, the heating temperature of a second zone is 175 ℃, the heating temperature of a third zone is 175 ℃, the heating temperature of a fourth zone is 185 ℃, the heating temperature of a fifth zone is 180 ℃, the heating temperature of a sixth zone is 180 ℃, the heating temperature of the seventh zone is 180 ℃, and the screw rotation speed of the double-screw extruder is 60 r/min;
(2) adding the resin master batch into a multi-layer co-extrusion casting machine for casting, wherein the temperature of each point during casting is respectively as follows: the first zone is 180 ℃, the second zone is 180 ℃, the third zone is 180 ℃, the fourth zone is 190 ℃, the fifth zone is 185 ℃, the sixth zone is 185 ℃, the seventh zone is 185 ℃, the rotating speed of the multilayer co-extrusion casting machine is 45r/min, and the full-biomass porous material slow-release antibacterial activity preservative film is obtained.
The processing aids comprise a chain extender ADR4300 and an antioxidant 245.
The raw materials and the amounts thereof in comparative example 1 are shown in Table 2.
TABLE 2 preservative film raw materials and dosages
| Functional ingredients | Name of substance | Mass fraction/% | |
| Resin base material | Polylactic acid (4032D) | 98.8 | |
| | ADR4300 | 1 | |
| Antioxidant agent | 245 | 0.2 |
Comparative example 2
The preparation method of the preservative film comprises the following steps:
(1) washing biological raw materials with distilled water, drying at 80 deg.C for 24 hr to constant weight, cooling to normal temperature, pulverizing with pulverizer, and sieving with 160 mesh sieve to obtain biological porous substance;
(2) uniformly mixing a resin base material, a chain extender ADR4300, an antioxidant 245 and a biological porous substance in proportion, and then extruding and granulating through a double-screw extruder to obtain resin master batches, wherein the double-screw extruder is sequentially provided with seven heating zones from an inlet to an outlet, the heating temperature of a first zone is 165 ℃, the heating temperature of a second zone is 175 ℃, the heating temperature of a third zone is 175 ℃, the heating temperature of a fourth zone is 185 ℃, the heating temperature of a fifth zone is 180 ℃, the heating temperature of a sixth zone is 180 ℃, the heating temperature of a seventh zone is 180 ℃, and the screw rotation speed of the double-screw extruder is 60 r/min;
(3) adding the resin master batch into a multi-layer co-extrusion casting machine for casting, wherein the temperature of each point during casting is respectively as follows: the first zone is 180 ℃, the second zone is 180 ℃, the third zone is 180 ℃, the fourth zone is 190 ℃, the fifth zone is 185 ℃, the sixth zone is 185 ℃, the seventh zone is 185 ℃, the rotating speed of the multilayer co-extrusion casting machine is 45r/min, and the full-biomass porous material slow-release antibacterial activity preservative film is obtained.
The biological raw material is shaddock peel.
The matrix resin is polylactic acid.
The processing aids comprise a chain extender ADR4300 and an antioxidant 245.
The raw materials and the amounts thereof in comparative example 2 are shown in Table 3.
TABLE 3 raw materials and amounts of wrap
| Functional ingredients | Name of substance | Mass fraction/% | |
| Resin base material | Polylactic acid (4032D) | 40 | |
| | ADR4300 | 1 | |
| Antioxidant agent | 245 | 0.2 | |
| Biologically active substance | Washing pericarpium Citri Grandis, drying, and pulverizing to obtain | 58.5 |
Test example 1
The wrap films of example 1 and comparative examples 1-2 were tested for physical properties and the water vapor transmission rate (WVP) was measured by a PERMATRAN-W1/50G water vapor transmission rate tester at a relative humidity of 100% and a temperature of 37.8 deg.C for 3 measurements per sample, and the average was taken. Oxygen Transmission Rate (OTR) test A film sample was cut into a 97mm diameter circular sample by a PERME G2/132 pressure differential gas permeameter, reference GB/T1038-2000, set at a test temperature of 23 ℃ and subjected to an experiment, each sample was measured 3 times, and an average value was taken. The results are shown in Table 4.
TABLE 4 physical Properties of wrap
Test example 2
The freshness performance of the bags made of the wrap films of example 1 and comparative example 1 was measured.
In order to examine the fresh-keeping capacity of the full-biomass porous material slow-release antibacterial activity preservative film on mutton, the mutton is packaged by a package prepared by the full-biomass porous material slow-release antibacterial activity preservative film in example 1, the mutton is stored at 4 ℃, and the change of the number of mutton microorganisms along with the storage days is measured. The blank polylactic acid bags made of the preservative film without the active ingredient of comparative example 1 were used as a control parallel experimental group, and the experimental group settings and experimental results are shown in table 5:
TABLE 5 determination of total number of mutton colonies [ lg (CFU/g) ] in the packaging bags
| Group of | |
|
|
Day 9 |
| Example 1 | 3.89 | 4.89 | 5.30 | 5.95 |
| Comparative example 1 | 3.89 | 5.76 | 6.74 | 7.97 |
As can be seen from table 5, the mutton of the slow-release antibacterial activity preservative film of the all-biomass porous material containing the active substance of example 1 was significantly less in colony content than the total number of colonies of the blank bag of comparative example 1 throughout the entire refrigeration process. Therefore, the total number of bacterial colonies is used as a measurement index, and compared with a blank bag, the full-biomass porous material slow-release antibacterial activity preservative film containing active substances is used for preserving mutton, so that the shelf life of the mutton can be prolonged by about 5 days.
Test example 3
The freshness retaining ability of the packaging bags made of the wrap films of example 1 and comparative examples 1 to 2 to fruits and vegetables was measured
The blueberry packaged in a packaging bag prepared from the all-biomass porous material slow-release antibacterial activity preservative film prepared in the embodiment 1 is stored at 4 ℃, and the weight loss rate of the blueberry is measured. The blank bag prepared by adding the preservative film without the active ingredient in the comparative example 1 and the packaging bag prepared by adding the full-biomass porous material active preservative film without the antibacterial agent in the comparative example 2 are used as control parallel experimental groups, and the experimental results are shown in fig. 1.
The differences exist among the individual fruits and vegetables, the fruits and vegetables are high in possible maturity and high in respiration rate measured at 14 days, so that the weight loss is large, but the overall trend shows that the weight loss rate of the package in the embodiment 1 is smaller than that of the other two groups. The experimental packaging is that all fruits and vegetables are packaged, and one bag is opened every 7 days for measurement, so that the ripeness of the fruits and vegetables in each bag is probably not the same. The water vapor transmission rate has little influence on the weight loss of the fruits and vegetables, the oxygen transmission rate is a key, and the oxygen transmission rate influences the respiration of the fruits and vegetables.
As can be seen from the figure 1, the all-biomass porous material slow-release antibacterial active preservative film in the example 1 has an obvious inhibiting effect on the weight loss of blueberries, and compared with the preservative film without active substances in the comparative example 1 and the all-biomass porous material active preservative film without an antibacterial agent in the comparative example 2, the weight loss rate of the all-biomass porous material slow-release antibacterial active preservative film in the example 1 on the blueberries is obviously reduced, which shows that the all-biomass porous material slow-release antibacterial active preservative film can effectively prolong the preservation time of the blueberries and can keep the freshness of the blueberries for a longer time.
The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (10)
1. The slow-release antibacterial active preservative film made of the full-biomass porous material is characterized by comprising the following raw materials in percentage by weight: 35-45% of matrix resin, 30-40% of biological porous substance, 20-25% of antibacterial agent and 0.9-1.3% of processing aid.
2. The whole biomass porous material slow-release antibacterial activity preservative film according to claim 1, wherein the matrix resin is one or a mixture of PLA, PBS, PBAT and PHA.
3. The full-biomass porous material slow-release antibacterial active preservative film according to claim 1, wherein the antibacterial agent comprises a biguanide antibacterial agent and/or a natural plant antibacterial agent.
4. The whole biomass porous material slow-release antibacterial activity preservative film according to claim 3, wherein the biguanide antibacterial agent comprises one or more of dodecyl guanidine, 2, 3-alkyl guanidine, 1- (3-chloro-4-heptyloxyphenyl) biguanide, 1, 6-bis [ 4-chlorophenyl biguanide ] hexane and biguanide caprylate, and the natural plant antibacterial agent comprises one or more of plantain herb extract, honeysuckle flower extract, ginkgo biloba extract, eugenol and curcumin.
5. The full-biomass porous material slow-release antibacterial active preservative film according to claim 3, wherein the antibacterial agent is a mixture of a biguanide antibacterial agent and a natural plant antibacterial agent, wherein the mass ratio of the biguanide antibacterial agent to the natural plant antibacterial agent is 1: 3-3: 1.
6. the full-biomass porous material slow-release antibacterial activity preservative film according to claim 1, characterized in that the biological porous material is prepared by the following method: washing biological raw materials with distilled water, drying at 70-90 deg.C to constant weight, pulverizing, and sieving to obtain biological porous substance.
7. The full-biomass porous material slow-release antibacterial activity preservative film according to claim 6, wherein the biological raw material is one or a mixture of hypha, pericarp, bark or straw, and the pericarp is one or a mixture of pomegranate rind, shaddock peel and citrus peel.
8. The full-biomass porous material slow-release antibacterial active preservative film according to claim 1, characterized in that the processing aids are a chain extender and an antioxidant, wherein the mass ratio of the chain extender to the antioxidant is 1: (0.1-0.3).
9. The preparation method of the full-biomass porous material slow-release antibacterial active preservative film according to claim 1, characterized by comprising the steps of mixing a biological porous substance and an antibacterial agent to enable the biological porous substance to fully adsorb the antibacterial agent, mixing the biological porous substance with matrix resin and a processing aid for granulation, and carrying out casting to obtain the full-biomass porous material slow-release antibacterial active preservative film.
10. The preparation method of the full-biomass porous material slow-release antibacterial activity preservative film according to claim 9, characterized in that a double-screw extruder is adopted for granulation, and the screw rotating speed of the double-screw extruder is 70-90 r/min; the casting adopts a casting machine, and the rotating speed of the casting machine is 40-50 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911118726.4A CN110835457A (en) | 2019-11-15 | 2019-11-15 | Full-biomass porous material slow-release antibacterial active preservative film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911118726.4A CN110835457A (en) | 2019-11-15 | 2019-11-15 | Full-biomass porous material slow-release antibacterial active preservative film and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110835457A true CN110835457A (en) | 2020-02-25 |
Family
ID=69576491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911118726.4A Pending CN110835457A (en) | 2019-11-15 | 2019-11-15 | Full-biomass porous material slow-release antibacterial active preservative film and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110835457A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112677583A (en) * | 2020-12-23 | 2021-04-20 | 青岛正大环保科技有限公司 | Heat-preservation and heat-insulation vacuum packaging bag and preparation method thereof |
| CN113736145A (en) * | 2021-10-19 | 2021-12-03 | 广州暨明科技有限公司 | Composite material capable of slowly releasing antibacterial ingredients, preparation method thereof and antibacterial slow release bag |
| CN115819913A (en) * | 2022-12-27 | 2023-03-21 | 安徽瑞鸿新材料科技有限公司 | Biodegradable PBS-based modified film for garbage bags |
| CN115948032A (en) * | 2022-11-30 | 2023-04-11 | 广东省科学院生物与医学工程研究所 | Biodegradable slow-release antibacterial preservative film and preparation method and application thereof |
| CN116694048A (en) * | 2023-07-26 | 2023-09-05 | 安徽同力新材料有限公司 | High-temperature-resistant biodegradable plastic and production process thereof |
| WO2024012363A1 (en) * | 2022-07-15 | 2024-01-18 | 无锡小天鹅电器有限公司 | Method for preparing sustained-release structure, sustained-release structure, and cleaning device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011101857A2 (en) * | 2010-02-19 | 2011-08-25 | Khandelwal, Sanjeev | Multifunctional textile |
| CN105778550A (en) * | 2016-03-07 | 2016-07-20 | 周霞萍 | Matrix membrane, humic acid-containing composition, preparation method and application of humic acid-containing composition, and prepared product |
| CN105800103A (en) * | 2016-05-13 | 2016-07-27 | 湖南省农产品加工研究所 | Active packing material, preparation method and application thereof |
| CN107286602A (en) * | 2017-07-27 | 2017-10-24 | 陕西科技大学 | A kind of multi-functional biodegradable composite and preparation method thereof |
| CN107455822A (en) * | 2017-09-12 | 2017-12-12 | 江苏纳纤新材料科技有限公司 | A kind of nanofiber micrometer fibers compound anti-mist haze mouth mask |
| CN108842206A (en) * | 2018-06-19 | 2018-11-20 | 安徽找宝纺织科技有限公司 | A kind of preparation method of long-acting type bacteriostatic fiber |
-
2019
- 2019-11-15 CN CN201911118726.4A patent/CN110835457A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011101857A2 (en) * | 2010-02-19 | 2011-08-25 | Khandelwal, Sanjeev | Multifunctional textile |
| CN105778550A (en) * | 2016-03-07 | 2016-07-20 | 周霞萍 | Matrix membrane, humic acid-containing composition, preparation method and application of humic acid-containing composition, and prepared product |
| CN105800103A (en) * | 2016-05-13 | 2016-07-27 | 湖南省农产品加工研究所 | Active packing material, preparation method and application thereof |
| CN107286602A (en) * | 2017-07-27 | 2017-10-24 | 陕西科技大学 | A kind of multi-functional biodegradable composite and preparation method thereof |
| CN107455822A (en) * | 2017-09-12 | 2017-12-12 | 江苏纳纤新材料科技有限公司 | A kind of nanofiber micrometer fibers compound anti-mist haze mouth mask |
| CN108842206A (en) * | 2018-06-19 | 2018-11-20 | 安徽找宝纺织科技有限公司 | A kind of preparation method of long-acting type bacteriostatic fiber |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112677583A (en) * | 2020-12-23 | 2021-04-20 | 青岛正大环保科技有限公司 | Heat-preservation and heat-insulation vacuum packaging bag and preparation method thereof |
| CN113736145A (en) * | 2021-10-19 | 2021-12-03 | 广州暨明科技有限公司 | Composite material capable of slowly releasing antibacterial ingredients, preparation method thereof and antibacterial slow release bag |
| WO2024012363A1 (en) * | 2022-07-15 | 2024-01-18 | 无锡小天鹅电器有限公司 | Method for preparing sustained-release structure, sustained-release structure, and cleaning device |
| CN115948032A (en) * | 2022-11-30 | 2023-04-11 | 广东省科学院生物与医学工程研究所 | Biodegradable slow-release antibacterial preservative film and preparation method and application thereof |
| CN115819913A (en) * | 2022-12-27 | 2023-03-21 | 安徽瑞鸿新材料科技有限公司 | Biodegradable PBS-based modified film for garbage bags |
| CN115819913B (en) * | 2022-12-27 | 2024-11-08 | 安徽瑞鸿新材料科技有限公司 | Biodegradable PBS-based modified film for garbage bags |
| CN116694048A (en) * | 2023-07-26 | 2023-09-05 | 安徽同力新材料有限公司 | High-temperature-resistant biodegradable plastic and production process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110835457A (en) | Full-biomass porous material slow-release antibacterial active preservative film and preparation method thereof | |
| Wang et al. | Development, characterization and application of intelligent/active packaging of chitosan/chitin nanofibers films containing eggplant anthocyanins | |
| Chen et al. | Antimicrobial activity of pomegranate peel and its applications on food preservation | |
| Singh et al. | Effect on the properties of edible starch-based films by the incorporation of additives: a review | |
| Khodayari et al. | Effect of poly (lactic acid) films incorporated with different concentrations of Tanacetum balsamita essential oil, propolis ethanolic extract and cellulose nanocrystals on shelf life extension of vacuum-packed cooked sausages | |
| Zhang et al. | Tea polyphenols (TP): a promising natural additive for the manufacture of multifunctional active food packaging films | |
| Aitboulahsen et al. | Effect of plasticizer type and essential oils on mechanical, physicochemical, and antimicrobial characteristics of gelatin, starch, and pectin‐based films | |
| Rudra et al. | Food industry waste: mine of nutraceuticals | |
| Gniewosz et al. | The antimicrobial activity of pullulan film incorporated with meadowsweet flower extracts (Filipendulae ulmariae flos) on postharvest quality of apples | |
| Espitia et al. | Physical and antibacterial properties of açaí edible films formulated with thyme essential oil and apple skin polyphenols | |
| CN102150704B (en) | Fruit and vegetable fresh-keeping agent and preparation method thereof | |
| CN103271142B (en) | preparation method of kiwi fruit preservative | |
| CN109454945A (en) | A kind of anti-oxidant antibacterial film of double-layer double-direction controlled release and the preparation method and application thereof | |
| Singaram et al. | Review on functionalized pectin films for active food packaging | |
| WO2021107878A1 (en) | Edible coating films compatible with vegan, halal and kosher diets for preservation of fruits and vegetables | |
| Luo et al. | Preparation of humidity-responsive cinnamon essential oil nanomicelles and its effect on postharvest quality of strawberries | |
| An et al. | Biodegradable bio-film based on Cordyceps militaris and metal-organic frameworks for fruit preservation | |
| Jiang et al. | High-amylose corn starch/konjac glucomannan composite films incorporating nano TiO2 and pomegranate peel extract and their application as coatings on Agaricus bisporus | |
| CN104910502B (en) | Slow release food fresh keeping film and preparation method thereof | |
| Luangtana-anan et al. | Shellac-based coating polymer for agricultural applications | |
| CN105800103B (en) | Active packing material, preparation method and application thereof | |
| Dalei et al. | In situ crosslinked Schiff base biohydrogels containing Carica papaya peel extract: application in the packaging of fresh berries | |
| Deng et al. | Antibacterial and antioxidant plant‐derived aldehydes: A new role as cross‐linking agents in biopolymer‐based food packaging films | |
| Pan et al. | Incorporation of Polygonatum cyrtonema extracts of NADES into chitosan/soybean isolate protein films: impact on sweet cherry storage quality | |
| Zheng et al. | Preparation of slow-release Polylactic acid antibacterial active packaging films and its application in spinach preservation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200225 |
|
| RJ01 | Rejection of invention patent application after publication |