CN117247604A - Starch-based intelligent active packaging film and preparation method and application thereof - Google Patents
Starch-based intelligent active packaging film and preparation method and application thereof Download PDFInfo
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- CN117247604A CN117247604A CN202311215320.4A CN202311215320A CN117247604A CN 117247604 A CN117247604 A CN 117247604A CN 202311215320 A CN202311215320 A CN 202311215320A CN 117247604 A CN117247604 A CN 117247604A
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- 229920002472 Starch Polymers 0.000 title claims abstract description 55
- 239000008107 starch Substances 0.000 title claims abstract description 55
- 235000019698 starch Nutrition 0.000 title claims abstract description 55
- 238000009456 active packaging Methods 0.000 title claims abstract description 30
- 229920006280 packaging film Polymers 0.000 title claims abstract description 29
- 239000012785 packaging film Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 39
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000002105 nanoparticle Substances 0.000 claims abstract description 20
- 235000013305 food Nutrition 0.000 claims abstract description 18
- 238000004806 packaging method and process Methods 0.000 claims abstract description 10
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 claims abstract description 6
- 230000007613 environmental effect Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 22
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 21
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 21
- HCUARRIEZVDMPT-UHFFFAOYSA-N Indole-2-carboxylic acid Chemical compound C1=CC=C2NC(C(=O)O)=CC2=C1 HCUARRIEZVDMPT-UHFFFAOYSA-N 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 14
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 12
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 239000006185 dispersion Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 9
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 6
- 229940032296 ferric chloride Drugs 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 6
- 239000012046 mixed solvent Substances 0.000 claims description 5
- 229940044631 ferric chloride hexahydrate Drugs 0.000 claims description 4
- NQXWGWZJXJUMQB-UHFFFAOYSA-K iron trichloride hexahydrate Chemical compound O.O.O.O.O.O.[Cl-].Cl[Fe+]Cl NQXWGWZJXJUMQB-UHFFFAOYSA-K 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 229910021529 ammonia Inorganic materials 0.000 abstract description 16
- 230000000903 blocking effect Effects 0.000 abstract description 15
- 230000008859 change Effects 0.000 abstract description 12
- 230000004044 response Effects 0.000 abstract description 9
- 241000143060 Americamysis bahia Species 0.000 abstract description 8
- 239000002131 composite material Substances 0.000 abstract description 8
- 230000000844 anti-bacterial effect Effects 0.000 abstract description 7
- 238000003860 storage Methods 0.000 abstract description 6
- 235000013372 meat Nutrition 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 229920000642 polymer Polymers 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 230000002209 hydrophobic effect Effects 0.000 description 4
- 238000011056 performance test Methods 0.000 description 4
- 241000238557 Decapoda Species 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 235000015277 pork Nutrition 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 102000009027 Albumins Human genes 0.000 description 1
- 108010088751 Albumins Proteins 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 229920005615 natural polymer Polymers 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005316 response function Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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
- C08J2303/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2303/02—Starch; Degradation products thereof, e.g. dextrin
-
- 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
- C08K5/0091—Complexes with metal-heteroatom-bonds
-
- 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
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/053—Polyhydroxylic alcohols
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)
- Compositions Of Macromolecular Compounds (AREA)
- Wrappers (AREA)
Abstract
The invention belongs to the technical field of polymer composite materials, and in particular relates to a starch-based intelligent active packaging film, and a preparation method and application thereof, wherein the starch-based intelligent active packaging film is prepared from the following raw materials: starch, glycerol, functional nanoparticles. The invention also provides a preparation method of the starch-based intelligent active packaging film, the prepared composite material has excellent mechanical strength, ultraviolet blocking, high-energy blue light blocking, water vapor blocking, hydrophobicity, ammonia response color-changing antibacterial property, antibacterial property and other properties, can keep higher visible light transparency, can be used as an intelligent indication material for effectively indicating the change condition of freshness of meat foods such as shrimps in the storage process in time, and has a simple preparation process and wide application value in the fields of food packaging, intelligent materials, ammonia detection, environmental monitoring, safety and the like.
Description
Technical Field
The invention belongs to the technical field of polymer composite materials, and particularly relates to a starch-based intelligent active packaging film, and a preparation method and application thereof.
Background
Food packaging plays an important role in the field of food safety, but because the common food packaging has single function, the food safety requirement of consumers cannot be met, so that the development of intelligent active food packaging becomes a research hot spot. Particularly, the intelligent active packaging film material with the pH/ammonia response function can improve the internal environment of food packaging and prolong the shelf life of food, and can generate obvious color response to timely and accurately indicate the change of freshness/spoilage degree of meat food in the processes of transportation, storage and sale. Starch is one of the most promising natural polymer materials because of its rich sources, renewable, high availability, biodegradability, low cost, etc. and its high biocompatibility and good film-forming properties. However, the starch material has the problems of brittleness, easy water absorption, poor mechanical property and the like, and simultaneously lacks the functions of ammonia response color change, ultraviolet shielding, antibiosis and the like, so that the application of the starch material in the field of intelligent active packaging is limited. According to the invention, starch is used as a matrix, self-made functional nano particles are used as a filler, so that the mechanical strength, ultraviolet blocking, high-energy blue light blocking, water vapor blocking, hydrophobic performance, ammonia response color change, antibacterial performance and other performances of the starch composite film material are improved, the starch-based intelligent active packaging film material with excellent comprehensive performance is developed, and the application of the starch-based intelligent active packaging film material in the fields of food packaging, intelligent materials, ammonia detection, environmental monitoring, safety and the like is widened.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a starch-based intelligent active packaging film, and a preparation method and application thereof. The intelligent active packaging film material has excellent mechanical strength, ultraviolet blocking, high-energy blue light blocking, water vapor blocking, hydrophobic performance, ammonia response color change, antibacterial performance and other performances, can also maintain higher visible light transparency, can be used as an intelligent indicating material for timely and effectively indicating the change condition of freshness of meat foods (such as shrimps, pork, fish and the like) in the storage process, and is simple in preparation process, environment-friendly, low in cost and suitable for amplified production.
The technical scheme of the invention is as follows:
the invention provides a starch-based intelligent active packaging film which is characterized by comprising the following components in parts by weight: 200 parts of starch, 55 parts of glycerol and 2-10 parts of functional nano particles;
the functional nano particles have the particle size of 200-500 nm, and the preparation method comprises the following steps:
(1) 48 parts of 2-indolecarboxylic acid and 17 parts of potassium hydroxide are dispersed in 1500 parts of methanol, and stirred at room temperature for 1 to h to obtain a uniform solution for later use;
(2) 27 parts of ferric chloride hexahydrate is taken and dissolved in 1000 parts of methanol to obtain uniform ferric chloride solution for standby;
(3) Adding the ferric chloride solution obtained in the step (2) into the 2-indolecarboxylic acid solution obtained in the step (1), stirring at room temperature for reaction for 12 hours, and then sequentially carrying out centrifugal separation, washing with ethanol and drying to obtain the functional nano particles (the color of which is tan).
The invention also provides a preparation method of the starch-based intelligent active packaging film, which is characterized by comprising the following steps:
(1) 200 parts of starch and 55 parts of glycerol are added into 3000 parts of deionized water, and stirred at 85 ℃ for 45min to obtain a uniform solution for later use;
(2) Adding 2-10 parts of functional nano particles into a mixed solvent of 2000 parts of deionized water and 500 parts of ethanol, and stirring for 45min at room temperature to obtain uniform dispersion liquid for later use;
(3) Adding the dispersion liquid obtained in the step (2) into the solution obtained in the step (1), and stirring for 45min at 85 ℃ to obtain uniform film forming liquid for later use;
(4) Pouring the film forming liquid obtained in the step (3) into an organic glass dish, and drying 20 h in an oven at 60 ℃ to obtain the starch-based intelligent active packaging film.
The application of the starch-based intelligent active packaging film is characterized by being applied to the fields of food packaging, intelligent materials, ammonia gas detection, environment monitoring, safety and the like.
Compared with the prior art, the invention has the following beneficial effects:
the starch-based intelligent active packaging film prepared by the invention has excellent mechanical strength, ultraviolet blocking, high-energy blue light blocking, water vapor blocking, hydrophobic performance, ammonia response color change, antibacterial performance and other performances, can also maintain higher visible light transparency, can be used as an intelligent indication material for timely and effectively indicating the freshness change condition of meat foods (such as shrimps, pork, fish and the like) in the storage process, has simple preparation process, environment friendliness and low cost, is suitable for large-scale production, and has wide application value in the fields of food packaging, intelligent materials, ammonia detection, environmental monitoring, safety and the like.
Drawings
FIG. 1 is a scanning electron microscope image of a functional nanoparticle according to the present invention;
fig. 2 is a photograph of a sample of the starch film material prepared in the comparative example of the present invention and a sample of the starch-based smart active packaging film prepared in the example.
Detailed Description
The present invention will now be described in more detail by way of examples, which are given by way of illustration only and are not to be construed as limiting the scope of the invention, which is defined by the appended claims.
In the following specific examples and comparative examples, formulations, preparation methods, the starch was a product offered by the company of the Biotechnology, inc. of Albumin; 2-indolecarboxylic acid is an analytically pure grade reagent supplied by the chemical industry limited company of the family Hua Weirui of Beijing; ferric chloride hexahydrate, potassium hydroxide, methanol, ethanol, glycerol are analytical grade reagents supplied by the company of the sciences of the ridge, inc.
In the following specific examples and comparative examples, formulations, preparation methods, the functional nanoparticles have a particle size of 200-500 nm, and the preparation method comprises the following steps:
(1) 48 parts of 2-indolecarboxylic acid and 17 parts of potassium hydroxide are dispersed in 1500 parts of methanol, and stirred at room temperature for 1 to h to obtain a uniform solution for later use;
(2) 27 parts of ferric chloride hexahydrate is taken and dissolved in 1000 parts of methanol to obtain uniform ferric chloride solution for standby;
(3) Adding the ferric chloride solution obtained in the step (2) into the 2-indolecarboxylic acid solution obtained in the step (1), stirring at room temperature for reaction for 12 hours, and then sequentially carrying out centrifugal separation, washing with ethanol and drying to obtain the functional nano particles (the color of which is tan).
Example 1
The intelligent starch-based active packaging film is characterized by comprising the following components in parts by weight: 200 parts of starch, 55 parts of glycerol and 2 parts of functional nano particles.
The preparation method comprises the following steps:
(1) 200 parts of starch and 55 parts of glycerol are added into 3000 parts of deionized water, and stirred at 85 ℃ for 45min to obtain a uniform solution for later use;
(2) Adding 2 parts of functional nano particles into a mixed solvent of 2000 parts of deionized water and 500 parts of ethanol, and stirring for 45min at room temperature to obtain uniform dispersion liquid for later use;
(3) Adding the dispersion liquid obtained in the step (2) into the solution obtained in the step (1), and stirring for 45min at 85 ℃ to obtain uniform film forming liquid for later use;
(4) Pouring the film forming liquid obtained in the step (3) into an organic glass dish, and drying 20 h in an oven at 60 ℃ to obtain the starch-based intelligent active packaging film.
Example 2
The intelligent starch-based active packaging film is characterized by comprising the following components in parts by weight: 200 parts of starch, 55 parts of glycerol and 6 parts of functional nano particles.
The preparation method comprises the following steps:
(1) 200 parts of starch and 55 parts of glycerol are added into 3000 parts of deionized water, and stirred at 85 ℃ for 45min to obtain a uniform solution for later use;
(2) Adding 6 parts of functional nano particles into a mixed solvent of 2000 parts of deionized water and 500 parts of ethanol, and stirring for 45min at room temperature to obtain uniform dispersion liquid for later use;
(3) Adding the dispersion liquid obtained in the step (2) into the solution obtained in the step (1), and stirring for 45min at 85 ℃ to obtain uniform film forming liquid for later use;
(4) Pouring the film forming liquid obtained in the step (3) into an organic glass dish, and drying 20 h in an oven at 60 ℃ to obtain the starch-based intelligent active packaging film.
Example 3
The intelligent starch-based active packaging film is characterized by comprising the following components in parts by weight: 200 parts of starch, 55 parts of glycerol and 10 parts of functional nano particles.
The preparation method comprises the following steps:
(1) 200 parts of starch and 55 parts of glycerol are added into 3000 parts of deionized water, and stirred at 85 ℃ for 45min to obtain a uniform solution for later use;
(2) Adding 10 parts of functional nano particles into a mixed solvent of 2000 parts of deionized water and 500 parts of ethanol, and stirring for 45min at room temperature to obtain uniform dispersion liquid for later use;
(3) Adding the dispersion liquid obtained in the step (2) into the solution obtained in the step (1), and stirring for 45min at 85 ℃ to obtain uniform film forming liquid for later use;
(4) Pouring the film forming liquid obtained in the step (3) into an organic glass dish, and drying 20 h in an oven at 60 ℃ to obtain the starch-based intelligent active packaging film.
Comparative example
As a comparative standard to the above examples, the present invention provides a starch film material prepared without functional nanoparticles comprising the steps of:
(1) 200 parts of starch and 55 parts of glycerol are added into 3000 parts of deionized water, and stirred at 85 ℃ for 45min to obtain a uniform solution for later use;
(2) Adding 2000 parts of deionized water and 500 parts of ethanol into the solution obtained in the step (1), and stirring for 45min at 85 ℃ to obtain uniform film forming liquid for later use;
(3) Pouring the film forming liquid obtained in the step (2) into an organic glass dish, and drying 20 h in an oven at 60 ℃ to obtain the starch film material.
Structure and performance testing:
the starch film material prepared by the comparative example and the starch-based intelligent active packaging film material prepared by the example are subjected to structure and performance tests, wherein ultraviolet visible performance is tested by an ultraviolet visible spectrometer (Lamdba 365, platinum elmer instrument company), and the average ultraviolet transmittance is calculated by referring to GB/T18830-2009; tensile properties were tested according to GB/T1040-2006; the water vapor transmission coefficient was measured according to ASTM E96; the antibacterial property of the material was tested according to QBT 2591-2003; the contact angle analyzer was used to determine the water contact angle of the film sample material (note: the larger the water contact angle, the better the surface hydrophobicity); the ammonia response test method is as follows: the sample material was exposed to an ammonia atmosphere and the color change of the sample material was observed.
Shrimp freshness monitoring experiment: fresh shrimps were purchased from the market, shrimps (mass: 30 g) were placed in a petri dish and sealed using a petri dish cover, under which a starch film material prepared in comparative example and a starch-based smart active packaging film material prepared in example 3 (pre-cut into sample film material having a diameter of 1 cm) were attached, and then the shrimp samples were stored in an oven at 25 ℃ to observe and record changes in freshness of the shrimps and changes in color of the sample film material.
The above performance test data are shown in tables 1 and 2.
Table 1 sample performance test data
TABLE 2 shrimp freshness monitoring experiment results (where t is the storage time of fresh shrimp)
The ammonia response test experiment results prove that the starch film material prepared by the comparative example is colorless and transparent, and has no color change or colorless and transparent optical property after being exposed to ammonia environment; the starch-based composite material prepared in example 1 was light pale brown, and changed to light pale yellow after being exposed to ammonia gas; the starch-based composite material prepared in example 2 was light tan and changed to pale yellow in color after exposure to ammonia gas; the starch-based composite prepared in example 3 was tan and changed to yellow in color upon exposure to ammonia.
In a word, the sample performance test data (see tables 1 and 2) show that the starch-based composite material prepared by the invention has excellent mechanical strength, ultraviolet blocking, high-energy blue light blocking, water vapor blocking, hydrophobic performance, ammonia response color change, antibacterial performance and other performances, can maintain higher visible light transparency, can be used as an intelligent indication material for effectively indicating the freshness change condition of meat foods such as shrimps in the storage process (see table 2), and has the advantages of simple preparation process, environmental protection, low cost, suitability for amplified production, and wide application value in the fields of food packaging, intelligent materials, ammonia detection, environmental monitoring, safety and the like.
The content of the invention is not limited to the examples listed, and any equivalent transformation to the technical solution of the invention that a person skilled in the art can take on by reading the description of the invention is covered by the claims of the invention.
Claims (3)
1. The intelligent starch-based active packaging film is characterized by comprising the following components in parts by weight: 200 parts of starch, 55 parts of glycerol and 2-10 parts of functional nano particles;
the functional nano particles have the particle size of 200-500 nm, and the preparation method comprises the following steps:
(1) 48 parts of 2-indolecarboxylic acid and 17 parts of potassium hydroxide are dispersed in 1500 parts of methanol, and stirred at room temperature for 1 to h to obtain a uniform solution for later use;
(2) 27 parts of ferric chloride hexahydrate is taken and dissolved in 1000 parts of methanol to obtain uniform ferric chloride solution for standby;
(3) Adding the ferric chloride solution obtained in the step (2) into the 2-indolecarboxylic acid solution obtained in the step (1), stirring at room temperature for reaction for 12 hours, and then sequentially carrying out centrifugal separation, washing with ethanol and drying to obtain the functional nano particles.
2. The method for preparing the starch-based intelligent active packaging film according to claim 1, which is characterized by comprising the following steps:
(1) 200 parts of starch and 55 parts of glycerol are added into 3000 parts of deionized water, and stirred at 85 ℃ for 45min to obtain a uniform solution for later use;
(2) Adding 2-10 parts of functional nano particles into a mixed solvent of 2000 parts of deionized water and 500 parts of ethanol, and stirring for 45min at room temperature to obtain uniform dispersion liquid for later use;
(3) Adding the dispersion liquid obtained in the step (2) into the solution obtained in the step (1), and stirring for 45min at 85 ℃ to obtain uniform film forming liquid for later use;
(4) Pouring the film forming liquid obtained in the step (3) into an organic glass dish, and drying 20 h in an oven at 60 ℃ to obtain the starch-based intelligent active packaging film.
3. The use of a starch-based intelligent active packaging film according to claim 1, for food packaging, intelligent materials, ammonia gas detection, environmental monitoring and safety applications.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311215320.4A CN117247604A (en) | 2023-09-20 | 2023-09-20 | Starch-based intelligent active packaging film and preparation method and application thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311215320.4A CN117247604A (en) | 2023-09-20 | 2023-09-20 | Starch-based intelligent active packaging film and preparation method and application thereof |
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| CN117247604A true CN117247604A (en) | 2023-12-19 |
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