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Corn bran based degradable antibacterial film and preparation method thereof

A corn husk and antibacterial film technology, applied in the field of degradable antibacterial film and its preparation, can solve problems such as environmental pollution, plastic packaging film and composite packaging film are not easily degraded, etc. Membrane method simple effect

Active Publication Date: 2017-06-06
HEILONGJIANG BAYI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] An object of the present invention is to provide a degradable antibacterial film based on corn husks, which is used to solve the problem of environmental pollution caused by plastic packaging films and composite packaging films in the prior art. problem, and improved the added value of corn bran, another object of the present invention is to provide the preparation method of this degradable antibacterial film based on corn bran

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This degradable antibacterial film based on corn bran is composed of 4% corn bran powder, 12% sodium hydroxide, 3% konjac gum, 1.0% chitosan, 7.0% acetic acid, 2% Gum Arabic, 4% allyl isothiocyanate, and 10% deionized water are prepared, and the corn bran powder is 270 mesh corn bran powder. The mass-to-volume ratio is the ratio of the mass of a certain component to the volume of all components, and the volume of all components is corn bran powder, sodium hydroxide, konjac gum, chitosan, acetic acid, gum arabic, and isothiocyanate The total volume of propyl ester and deionized water, such as the mass-to-volume ratio of corn bran powder is the ratio of the quality of corn bran powder to the above-mentioned total volume, the same below.

[0023] The preparation method of the above-mentioned degradable antibacterial film based on corn bran:

[0024] (1) Select corn husks without mildew and insects, soak them in deionized water for 24 hours, and then dry them in an electri...

Embodiment 2

[0031] This degradable antibacterial film based on corn bran is composed of 6% corn bran powder, 14% sodium hydroxide, 4% konjac gum, 1.3% chitosan, 8.0% acetic acid, 3% Gum Arabic, 4.5% allyl isothiocyanate, and 12% deionized water are prepared, and the corn bran powder is 270 mesh corn bran powder.

[0032] The preparation method of the above-mentioned degradable antibacterial film based on corn bran:

[0033] (1) Select corn husks without mildew and insects, soak them in deionized water for 24 hours, and then dry them in an electric blast drying oven at 80°C for 18 minutes;

[0034] (2) Purify the dried corn bran into corn bran powder;

[0035] (3) Add 6% (w / v) corn bran powder to 14% (w / v) sodium hydroxide solution and stir for 15 minutes, add 1.3% (w / v) chitosan to 8% ( w / v) Acetic acid is placed in a magnetic stirrer and stirred until it is completely dissolved, then added to the mixture of corn bran powder and sodium hydroxide, then added 4% (w / v) konjac gum, 3% (w / v)...

Embodiment 3

[0040] This degradable antibacterial film based on corn bran is composed of 8% corn bran powder, 16% sodium hydroxide, 5% konjac gum, 1.6% chitosan, 9.0% acetic acid, 4% Gum Arabic, 5% allyl isothiocyanate, and 15% deionized water are prepared, and the corn bran powder is 270 mesh corn bran powder.

[0041] The preparation method of the above-mentioned degradable antibacterial film based on corn bran:

[0042] (1) Select corn husks without mildew and insects, soak them in deionized water for 24 hours, and then dry them in an electric blast drying oven at 90°C for 16 minutes;

[0043] (2) Purify the dried corn bran into corn bran powder;

[0044] (3) Add 8% (w / v) corn bran powder to 16% (w / v) sodium hydroxide solution and stir for 18 minutes, add 1.6% (w / v) chitosan to 9.0% (w / v) acetic acid is placed in a magnetic stirrer and stirred until it is completely dissolved, then added to the mixture of corn bran powder and sodium hydroxide, then added 5% (w / v) konjac gum, 4% (w / v ...

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Abstract

The invention relates to a corn bran based degradable antibacterial film and a preparation method thereof which is prepared from the following components by mass volume ratio: 4-9 percent of corn bran powder, 12-16 percent of sodium hydroxide, 3-5 percent of konjak gum, 1.0-1.6 percent of chitosan, 7.0-9.0 percent of acetic acid, 2-4 percent of arabic gum, 4-5 percent of allyl isothiocyanate and 10-15 percent of deionized water, wherein the corn bran powder selects 270-mesh corn bran powder. The corn bran based degradable antibacterial film has the thickness being 60-140 microns, the tensile strength being 35.9-46.7MP, the elongation at break being 21.6-30 percent and the folding endurance being 20-26 times. According to the corn bran based degradable antibacterial film, corn bran powder fine particles and antibacterial substances are uniformly distributed in a material, and a prepared packaging film has stronger mechanical properties and barrier property and can realize sealing with heating.

Description

[0001] 1. Technical field [0002] The invention relates to the technical field of packaging films, in particular to a corn bran-based degradable antibacterial film and a preparation method thereof. [0003] 2. Background technology [0004] Packaging film is widely used, but because packaging film is usually non-degradable, after the packaging film is disassembled from the packaging, it is often not used for secondary use, but is discarded, forming non-degradable garbage, which pollutes the environment . [0005] Corn is one of the main crops in our country and is the main raw material for the starch industry. Corn bran is one of the main by-products of corn starch processing, and its yield is about 20% of the corn raw material. However, most of corn husks have not been fully utilized for a long time, and are currently mainly used as livestock feed, with low economic value. Compared with other cereal husks, in addition to rich cellulose and hemicellulose, corn husk also con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L97/02C08L5/00C08L5/08C08K3/22C08K5/09C08K5/372C08J5/18
CPCC08J5/18C08J2397/02C08J2405/00C08L97/02C08L2201/06C08L2203/16C08L2205/025C08L2205/035C08L5/00C08L5/08C08K3/22C08K5/09C08K5/3725
Inventor 李娟张东杰王颖李志江张爱武王洪江
Owner HEILONGJIANG BAYI AGRICULTURAL UNIVERSITY
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