Preparation method of degradable collagen packaging material

An easily degradable, food packaging technology, applied in the field of food packaging and processing, can solve problems such as plastic environmental pollution, and achieve the effects of environmental protection, good plasticity, and extended shelf life

Inactive Publication Date: 2020-07-31
JIANGXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the problem of environmental pollution caused by the difficult degradation of plastics used as packaging materials, and at the same time improve the utilization rate of freshwater fish scales, and provides a method for preparing fish scale collagen-based easily degradable food packaging materials. The fish scale collagen matrix packaging material has anti-oxidation, antibacterial and easy degradation and good mechanical properties

Method used

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  • Preparation method of degradable collagen packaging material
  • Preparation method of degradable collagen packaging material
  • Preparation method of degradable collagen packaging material

Examples

Experimental program
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Embodiment 1

[0035] The present invention will be further described below in combination with specific embodiments.

[0036] The preparation method of fish scale collagen matrix degradable packaging material comprises the following steps:

[0037] (1) Extraction of freshwater fish scale protein:

[0038] ①Fish scale pretreatment: wash 200g of freshwater fish scales accurately weighed with deionized water for 3 times, drain and add 10% citric acid, the solid-liquid ratio is 1:20 (g / mL), and place on a magnetic stirrer Treat for 60 minutes with a rotating speed of 800 rpm / min, wash with deionized water three times after the end, and obtain decalcified fish scales after freeze-drying.

[0039] ②Collagen extraction: Weigh 150g of decalcified fish scales, the ratio of material to liquid is 1:25g / mL, the amount of pepsin added is 4%, and the pH is adjusted to 1.5 with 1M hydrochloric acid. °C for 4 hours, and suction-filtered to obtain a fish scale collagen solution.

[0040] ③ Concentration:...

Embodiment 2

[0053] The difference between this example and Example 1 is that no wheat starch, pomegranate flower extract, and clove essential oil are added to the components, and the rest are the same as Example 1.

[0054] Specifically:

[0055] (1) Extraction of freshwater fish scale protein:

[0056] ①Fish scale pretreatment: wash 200g of freshwater fish scales accurately weighed with deionized water for 3 times, drain and add 10% citric acid, the solid-liquid ratio is 1:20 (g / mL), and place on a magnetic stirrer Treat for 60 minutes with a rotating speed of 800 rpm / min, wash with deionized water three times after the end, and obtain decalcified fish scales after freeze-drying.

[0057] ②Collagen extraction: Weigh 150g of decalcified fish scales, the ratio of material to liquid is 1:25g / ml, the amount of pepsin added is 4%, and the pH is adjusted to 1.5 with 1M hydrochloric acid. °C for 4 hours, and suction-filtered to obtain a fish scale collagen solution.

[0058] ③ Concentration:...

Embodiment 3

[0064] The difference between this embodiment and embodiment 1 is that only fish scale collagen is used to directly make packaging materials.

[0065] Specifically:

[0066] (1) Extraction of freshwater fish scale protein:

[0067] ①Fish scale pretreatment: wash 200g of freshwater fish scales accurately weighed with deionized water for 3 times, drain and add 10% citric acid, the solid-liquid ratio is 1:20 (g / mL), and place on a magnetic stirrer Treat for 60 minutes with a rotating speed of 800 rpm / min, wash with deionized water three times after the end, and obtain decalcified fish scales after freeze-drying.

[0068] ②Collagen extraction: Weigh 150g of decalcified fish scales, the ratio of material to liquid is 1:25g / ml, the amount of pepsin added is 4%, and the pH is adjusted to 1.5 with 1M hydrochloric acid. °C for 4 hours, and suction-filtered to obtain a fish scale collagen solution.

[0069] ③ Concentration: Concentrate the fish scale collagen solution through a rotar...

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Abstract

The invention discloses a preparation method of an easily degradable packaging material with a fish scale collagen matrix, and belongs to the technical field of food packaging and processing. The material is prepared by taking fish scale collagen prepared by extracting collagen from fish scales of freshwater fishes as a matrix and adding wheat starch, pomegranate flower extract, essential oil, glycerol and sodium alginate. The environmental pollution caused by waste fish scales can be reduced, and high-valued utilization of fish scales is realized. The process is simple, and the prepared packaging material has high tensile strength, excellent toughness and plasticity and good antibacterial and antioxidant effects, can be degraded in the natural environment and does not pollute the environment.

Description

technical field [0001] The invention belongs to the technical field of food packaging and processing, and in particular relates to a method for preparing an easily degradable food packaging material with a fish scale collagen matrix having good mechanical properties and excellent antibacterial and antioxidative properties. Background technique [0002] Compared with the environmental pollution problems caused by non-degradable food packaging materials, degradable food packaging materials have received extensive attention. Among them, protein-based packaging materials have good plasticity and biocompatibility, but have disadvantages such as low mechanical strength, poor water resistance, and weak antibacterial properties. Therefore, protein-based packaging materials usually need to add other substrates, plasticizers, antibacterial agents, etc. to improve their mechanical properties and improve the anti-oxidation and antibacterial properties of the material. [0003] Fish sca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L89/00C08L3/02C08L5/04C08K5/053C08K5/00C08J5/18B65D65/46C07K14/78C12P21/06C07K1/14
CPCC08J5/18B65D65/466C07K14/78C12P21/06C08J2389/00C08J2403/02C08J2405/04C08K5/053C08K5/00Y02W90/10Y02A40/90
Inventor 涂宗财胡月明王辉李贞张晶晶
Owner JIANGXI NORMAL UNIV
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