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Anticorrosive preservative film as well as preparation method and application thereof

A technology of plastic wrap and sodium alginate, which is applied in sustainable manufacturing/processing, bio-packaging, sustainable packaging, etc., can solve the problems of poor water resistance, poor antibacterial and anti-corrosion effects, and insufficient mechanical strength to achieve good antibacterial effect of effect

Active Publication Date: 2022-06-07
QINGDAO AGRI UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, chitosan-sodium alginate film still has certain defects in performance, such as insufficient mechanical strength, poor antibacterial and antiseptic effect, poor oxygen barrier and water barrier performance, which to a certain extent limit its application in food packaging. Applications

Method used

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  • Anticorrosive preservative film as well as preparation method and application thereof
  • Anticorrosive preservative film as well as preparation method and application thereof
  • Anticorrosive preservative film as well as preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0024] The preparation of anti-corrosion preservative film (chitosan-chlorogenic acid-sodium alginate film), the steps are as follows:

[0025] Weigh 2 g of chitosan powder, slowly add it into 100 mL of acetic acid solution (concentration of 2%, V / V) under the action of a magnetic stirrer, and continue stirring for 1 h to obtain a chitosan solution. Weigh 2 g of sodium alginate powder and dissolve it in 100 mL of ultrapure water under the action of a magnetic stirrer to obtain a sodium alginate solution. Under the action of a magnetic stirrer, 1 g of glycerol was added to the chitosan solution and the sodium alginate solution, respectively. 0.6 g of chlorogenic acid powder was weighed and added to the above chitosan solution under the action of a magnetic stirrer to obtain a chitosan-chlorogenic acid mixed solution. Pour 25 mL of chitosan-chlorogenic acid mixed solution into a 150 mm disposable plate, dry it with hot air at 50°C for 1 hour, and then pour 25 mL of sodium algin...

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Abstract

The invention discloses an anticorrosive preservative film as well as a preparation method and application thereof, and belongs to the technical field of food industry biology. The preservative film disclosed by the invention is prepared from the following components in parts by mass: 0.5 to 4 parts of sodium alginate, 0.5 to 4 parts of chitosan, 0.3 to 1 part of chlorogenic acid and 0.5 to 2 parts of glycerol. Compared with the traditional chitosan-sodium alginate film, the preservative film prepared by the invention has better antibacterial effect, mechanical property and gas barrier property, and can be used for preserving fruits and vegetables.

Description

technical field [0001] The invention belongs to the field of food industry biotechnology, and in particular relates to an anti-corrosion fresh-keeping film, a preparation method and application thereof. Background technique [0002] Traditional petroleum-based material films have the advantages of low price and good physical properties. However, these plastic wrap films made of petrochemical products such as polyethylene (PE) and polyvinyl chloride (PVE) are very difficult to degrade, and incineration will produce a lot of harmful gases. , causing great harm to the environment. Therefore, the use of natural degradable materials and even edible materials to make green anti-corrosion plastic wrap has become an important direction for food preservation. These green degradable materials are usually degradable biological macromolecules, such as proteins, polysaccharides, and lipids. Through certain processing methods, intramolecular or intermolecular interactions of these macrom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L5/04C08L5/08C08K5/053C08K5/134C08J5/18
CPCC08J5/18C08J2305/04C08J2305/08C08K5/053C08K5/1345Y02W90/10Y02A40/90
Inventor 李兆杰汪颖陈琨姜群杨勇杨庆利彭传涛
Owner QINGDAO AGRI UNIV
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