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Preparation method of edible anti-bacterial packaging film

A technology of packaging film and chitosan solution, applied in packaging, wrapping paper, transportation and packaging, etc., can solve problems such as unseen tea polyphenols

Inactive Publication Date: 2012-08-22
HENAN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] There is no report on the application of tea polyphenols in packaging materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: add the carrageenan of 4% (w / v) in the chitosan solution of 0.9% (w / v), stir 30 minutes under the condition of 50 ℃, add sodium chloride 0.01% (w / w) while stirring ), after mixing evenly, add 2% (w / v) of gelatin in the solution, add 0.8% (w / v) of green tea polyphenols in the solution while stirring, and cast to form a film.

Embodiment 2

[0014] Embodiment 2: Add the carrageenan of 6% (w / v) in the chitosan solution of 1.2% (w / v), stir 40 minutes under the condition of 40 ℃, add sodium chloride 0.02% (w / w) while stirring ), after mixing evenly, 3% (w / v) of gelatin was added to the solution, and after stirring, 1.0% (w / v) of green tea polyphenols was added to the solution, and cast into a film.

Embodiment 3

[0015] Embodiment 3: add the carrageenan of 5% (w / v) in the chitosan solution of 1.5% (w / v), stir 50 minutes under the condition of 50 ℃, add sodium chloride 0.03% (w / w) while stirring ), after mixing evenly, add 4% (w / v) of gelatin in the solution, add 1.2% (w / v) of green tea polyphenols in the solution while stirring, and cast to form a film.

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PUM

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Abstract

The invention relates to a preparation method of an edible anti-bacterial packaging film. The preparation method is characterized in that carrageenan is added in a 0.9-1.5% (w / v) chitosan solution; the mixture is,stirred for 30-50 minutes at 40-50 DEG C; sodium chloride is added while stirring is carried out; after the mixture is mixed uniformly, gelatin and green tea polyphenol are added into the solution, and curtain coating is carried out, thus obtaining the edible anti-bacterial packaging film. The edible anti-bacterial packaging film prepared by the preparation method has a certain inhibitory action on bacteria and is environmental-friendly.

Description

technical field [0001] The invention relates to a preparation method of a packaging film, in particular to a preparation method of an edible antibacterial packaging film. Background technique [0002] One of the ways for humans to infect bacteria is through the food of the population, and food packaging materials are generally in direct contact with food, and the rich nutrients in food become the source of nutrients for the growth and reproduction of microorganisms in the high-temperature packaging internal environment. It is very important to develop food packaging materials with antibacterial and fresh-keeping functions. At present, there are many kinds of antibacterial materials, which generally include antibacterial plastics, antibacterial fibers and fabrics, antibacterial ceramics and antibacterial metals. The production of antibacterial materials generally involves adding antibacterial agents to the substrate or coating the surface of the substrate in an appropriate m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L5/00C08L5/08C08L89/00C08K13/02C08K3/16C08K5/1545B65D65/46
Inventor 王岸娜吴立根王晓曦竹建德
Owner HENAN UNIVERSITY OF TECHNOLOGY