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Preparation method of high-temperature-resistant lysozyme composite preservative film for food

A composite fresh-keeping and high-temperature resistant technology, applied in flexible coverings, packaging, wrapping paper, etc., can solve problems such as high cost, human injury, and short shelf life of food

Inactive Publication Date: 2021-09-14
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings of short food shelf life, damage to the human body and high cost in the prior art, and propose a method for preparing a high-temperature-resistant lysozyme composite plastic wrap for food

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The present invention will be further explained below in conjunction with specific embodiments.

[0015] 1, a kind of preparation method of high temperature-resistant lysozyme composite plastic wrap for food that the present invention proposes, comprises the following steps: get the glacial acetic acid dilution of 1mL and be constant to 100mL, obtain 1% glacial acetic acid aqueous solution; Get 1.5g chitosan , add it to the above-mentioned glacial acetic acid aqueous solution, and stir magnetically at room temperature for 24 hours to completely dissolve the chitosan to obtain the glacial acetic acid aqueous solution of chitosan; take 0.45g glycerin and 0.0375g montmorillonite and add them to the above-mentioned chitosan In the glacial acetic acid aqueous solution of sugar, centrifuge at 15000rpm centrifuge for 5 minutes, and then bathe in an ultrasonic water bath with a power of 360W for 15 minutes. Centrifugation and ultrasonic water bath constitute a cycle. After two c...

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Abstract

The invention belongs to the technical field of food preservation, particularly discloses a preparation method of a high-temperature-resistant lysozyme composite preservative film for food, and solves the defects that in the prior art, the quality guarantee period of the food is short, the human body is injured, and the cost is high. According to the preservative film, chitosan is used as a film forming matrix, glycerol, montmorillonite, Tween-80, high-temperature-resistant lysozyme and Tongling white ginger essential oil are added to form a composite film. The antibacterial composite preservative film prepared by the preparation method has very strong antibacterial ability, and can be used for packaging food or coating the surface of the food to form the coating after being cast into a film, so that food spoilage caused by microbial contamination and oxidation can be effectively inhibited, and the shelf life of the food is prolonged, particularly, the preservative film has a very good inhibition effect on dominant bacterial communities in crayfish foods, also has good mechanical properties, and can be widely applied to the fields of food preservation, food packaging and the like.

Description

technical field [0001] The invention relates to the technical field of food preservation, in particular to a preparation method of a high-temperature-resistant lysozyme composite preservation film for food. Background technique [0002] With the continuous improvement of living standards, consumers are paying more and more attention to food safety issues and are increasingly pursuing higher-quality food. The upgrading of consumer terminals and circulation supervision has forced the upgrading of crayfish farming management technology. The water body of crayfish farming has changed from traditional sewage to clean water. In order to ensure the cleanliness of high-density farming water, farmers usually use water purifiers in the farming waters , the most common environmentally friendly and safe water purifier is the Bacillus subtilis preparation, but this control technology also results in a higher content of Bacillus subtilis on the body surface of crayfish. Bacillus has the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L5/08C08L89/00C08K13/02C08K5/053C08K3/34C08K5/00C08J5/18B65D65/42
CPCC08J5/18B65D65/42C08J2305/08C08J2489/00C08K13/02C08K5/053C08K3/346C08K5/0058
Inventor 魏兆军
Owner HEFEI UNIV OF TECH