Functional gelatin food packaging film and preparation method thereof

A food packaging film and a functional technology are applied in the field of functional gelatin food packaging film and its preparation to achieve the effects of prolonging the shelf life, reducing the growth of food bacteria and having good thermal stability.

Inactive Publication Date: 2015-06-10
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there is no relevant literature or invention related to this research.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] While stirring, spray 4 parts of hydrogen peroxide into 80 parts of β-cyclodextrin, and drop 1 part of copper sulfate solution with a mass fraction of 0.02%, 40 o C reaction for 5 minutes, then at 70 o C reacted for 15 minutes, then dissolved the reactant in 100 o C boiling water and reacting for 30 minutes, after the solution is lowered to room temperature, centrifuge and precipitate the supernatant with absolute ethanol, wash the precipitate with 30% ethanol solution, and freeze-dry the precipitate to obtain carboxylated β-cyclodextrin; at 35 o Under C, stir and dissolve 50 parts of carboxylated β-cyclodextrin in 20% ethanol solution, and at the same time, stir and dissolve 25 parts of natural active substances in 15% ethanol solution, and add dropwise to the above carboxylated β-cyclodextrin Dextrin solution, at 15 o C, after 3 hours of ultrasound, 4 oC stood still for 12 hours, suction filtered and washed 3 times with 20% ethanol solution, and freeze-dried to ob...

Embodiment 2

[0033] While stirring, spray 1 part of hydrogen peroxide into 50 parts of β-cyclodextrin, and drop 1 part of copper sulfate solution with a mass fraction of 0.3%, 40 o C for 8 minutes, then at 70 o C reacted for 30 minutes, then dissolved the reactant in 100 o C boiling water and reacting for 30 minutes, after the solution is lowered to room temperature, centrifuge and precipitate the supernatant with absolute ethanol, wash the precipitate with 20% ethanol solution, and freeze-dry the precipitate to obtain carboxylated β-cyclodextrin; at 45 o Under C, stir and dissolve 10 parts of carboxylated β-cyclodextrin in 10% ethanol solution, and stir and dissolve 1 part of natural active substance in 30% ethanol solution, and add dropwise to the above carboxylated β-cyclodextrin Dextrin solution, at 10 o C, after 2 hours of ultrasound, 4 o C stood still for 12 hours, then suction filtered and washed 3 times with 10% ethanol solution, and freeze-dried to obtain embedded carboxylated...

Embodiment 3

[0035] While stirring, spray 5 parts of hydrogen peroxide into 120 parts of β-cyclodextrin, and drop 1 part of copper sulfate solution with a mass fraction of 0.5%, 40 o C reaction for 5 minutes, then at 70 o C reacted for 30 minutes, then dissolved the reactant in 100 o C boiling water and reacting for 30 minutes, after the solution is lowered to room temperature, centrifuge and precipitate the supernatant with absolute ethanol, wash the precipitate with 30% ethanol solution, and freeze-dry the precipitate to obtain carboxylated β-cyclodextrin; at 35 o Under C, stir and dissolve 25 parts of carboxylated β-cyclodextrin in 35% ethanol solution, and at the same time, stir and dissolve 0.5 parts of natural active substances in 25% ethanol solution, and add dropwise to the above carboxylated β-cyclodextrin Dextrin solution, at 20 o C, after 4 hours of sonication, 4 o C stood still for 12 hours, then suction filtered and washed 3 times with 25% ethanol solution, and freeze-drie...

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PUM

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Abstract

The invention provides a functional gelatin food packaging film and a preparation method thereof, and belongs to the field of food packaging. The method includes the steps that firstly, carboxylation beta-cyclodextrin is prepared through a hydrogen peroxide oxidation method, natural active matter dissolved in an ethanol solution is dripped into the carboxylation beta-cyclodextrin dissolved in the ethanol solution, the carboxylation beta-cyclodextrin stands still after ultrasonic operation, extracted, filtered, washed, frozen and dried, and then embedding carboxylation beta-cyclodextrin for embedding the natural active matter is obtained. The embedding carboxylation beta-cyclodextrin and a gelatin solution are blended, evenly stirred, taken out after being frozen, and completely dissolved, glycerinum and dialdehyde carboxymethylcellulose are sequentially added for reactions conducted for 10-40 minutes respectively, the materials are poured into a die after de-aeration and dried, and then the functional gelatin food packaging film is obtained. The prepared functional gelatin food packaging film has the advantages of resisting bacteria and oxidation and being good in mechanical performance and heat stability; products are safe, capable of achieving the healthcare effect and free of poisonous and side effects. The film can be degraded and beneficial to environmental protection, and has potential market application prospects.

Description

technical field [0001] The invention relates to the field of food packaging. Specifically, it relates to a functional gelatin food packaging film with antibacterial, antioxidative, good mechanical properties and thermal stability and a preparation method thereof. Background technique [0002] Resources, environment and population are the three main factors restricting the sustainable development of our country in the 21st century. Environmental protection and resource conservation have become the basic strategies for sustainable development in countries all over the world. However, my country has a large population and rapid economic growth, and the demand for food packaging films has increased rapidly, posing a huge challenge to the environment and resources. Therefore, the research and development of food packaging products using natural biological materials as raw materials has gradually become a research hotspot in the field of packaging. Natural food packaging film ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L89/00C08K9/10C08B37/16
Inventor 李德富叶友鑫葛黎明穆畅道
Owner SICHUAN UNIV
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