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Marine polysaccharide multilayer composite packaging film with antibacterial function

A marine polysaccharide and multi-layer composite technology, applied in packaging, wrapping paper, transportation and packaging, etc., can solve the problems of fast release of antibacterial agents, long-term delay of food spoilage, etc., and achieve excellent film-forming performance and low cost , the effect of simple preparation method

Active Publication Date: 2011-07-13
福建万弘海洋生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method is to directly add antibacterial ingredients to polymer materials, and the antibacterial agents are released quickly, which cannot achieve the purpose of delaying food spoilage for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0023] Example 1: A marine polysaccharide multilayer composite packaging film with antibacterial function, its basic composition is: 6.7% clove oil, 26.7% glycerin, 22.2% sodium alginate, 44.4% chitosan.

[0024] The preparation method of this packaging film is as follows:

[0025] Take 0.5mL of glacial acetic acid, add it to 100mL of water, stir to obtain an aqueous solution of glacial acetic acid; take 1g of chitosan and 0.4g of glycerin, add it to the above-mentioned aqueous solution of glacial acetic acid, stir evenly, let it stand overnight to completely dissolve, and pump Remove air bubbles in a vacuum to obtain chitosan-glycerin glacial acetic acid aqueous solution (note A solution); take 0.3g clove oil, add it to 10mL edible alcohol, stir to obtain clove oil-edible alcohol solution; take 1g sodium alginate, 0.4 g glycerin, add it to 100mL aqueous solution, stir magnetically to make it dissolve completely, then add the above clove oil-edible alcohol solution, stir magne...

example 2

[0026] Example 2: A marine polysaccharide multilayer composite packaging film with antibacterial function, its basic composition is: 1.2% clove oil, 28.2% glycerin, 23.5% sodium alginate, 47.1% chitosan.

[0027] The preparation method of this packaging film is as follows:

[0028] Be to get 0.05g clove oil when removing clove oil-edible alcohol solution preparation, be to get 5g sodium citrate and 3g calcium chloride when solidifying agent solution preparation, all the other are identical with example 1.

example 3

[0029] Example 3: A marine polysaccharide multilayer composite packaging film with antibacterial function, its basic composition is: 4.1% clove oil, 27.4% glycerin, 13.7% sodium alginate, 54.8% chitosan.

[0030] The preparation method of this packaging film is as follows:

[0031] Be to get 15g sodium citrate and 1g calcium chloride during preparation except solidifying agent solution, the pouring amount of B liquid is 25mL, and all the other are identical with example 1.

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PUM

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Abstract

The invention relates to a marine polysaccharide multilayer composite packaging film with an antibacterial function and a preparation method thereof, belonging to the fields of high polymer materials and food package. The marine polysaccharide multiplayer composite packaging film is prepared by forming a three-layer polyelectrolyte composite film by utilizing the static function of polycation electrolyte chitosan and polyanion electrolyte sodium alginate, and adding natural germicide, i.e. clove oil, to a middle film layer. The preparation method of the packaging film is simple; and the obtained packaging film has favorable mechanical performance, is superior to a low-density polyethylene film, can meet common requirements of food package, has favorable antibacterial controlled-release performance, can effectively prolong the shelf life of foods and can be used for fresh-keeping packaging of various foods, such as meat, cut fruits and vegetables, and the like.

Description

technical field [0001] The invention relates to a marine polysaccharide multilayer composite packaging film with antibacterial function and a preparation method thereof, belonging to the field of polymer materials and food packaging. Background technique [0002] Traditional food packaging films are mainly synthetic plastics such as polyethylene and polypropylene. These materials are based on the petroleum industry, aggravating the world's energy crisis, and do not meet the development trend and requirements of a low-carbon economy; at the same time, because they cannot be biodegraded, Serious environmental pollution has been caused. Therefore, it is of great practical significance to prepare biodegradable packaging films using abundant natural polymer biomaterials. Both chitosan and sodium alginate belong to marine polysaccharides, which come from a wide range of sources, are cheap, and have excellent film-forming properties. There have been no reports at home and abroad o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D65/40B32B33/00C08J5/18C08J3/24C08L5/08C08L5/04C08K5/053C08K5/098C08K3/24
Inventor 汪东风高美玲杨伟徐莹孙继鹏樊燕
Owner 福建万弘海洋生物科技有限公司
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