High-amylose corn starch inclusion antibacterial essential oil degradable antibacterial food packaging material and preparation method thereof

A corn starch and food packaging technology, applied in the direction of sustainable packaging, packaging, wrapping paper, etc., can solve the problems of food quality degradation, restrictions on the wide application of high-amylose corn starch, perishability, etc., and achieve the effect of delayed release

Pending Publication Date: 2022-06-07
JIMEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the packaging of pure high-amylose corn starch food is perishable, and it is easy to cause food quality degradation during the preservation process, which seriously limits the wide application of high-amylose corn starch in the field of food packaging.

Method used

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  • High-amylose corn starch inclusion antibacterial essential oil degradable antibacterial food packaging material and preparation method thereof
  • High-amylose corn starch inclusion antibacterial essential oil degradable antibacterial food packaging material and preparation method thereof
  • High-amylose corn starch inclusion antibacterial essential oil degradable antibacterial food packaging material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] S1. Preparation of dimethyl sulfoxide (DMSO) and H 2 The molar ratio of O is 1:1.5 DMSO solution.

[0036] S2. Preparation of 5% high amylose corn starch solution: Weigh 5g of high amylose corn starch (containing 64% of amylose) dissolved in 95g of the above S1 prepared DMSO solution, stirred until completely dispersed. Then continuously agitate at 125 °C to gelatinize for 2 h until the solution is transparent and cooled to 25 °C for later use.

[0037] S3. Preparation of membrane solution: Add 2 g of cinnamaldehyde and 1 g of glycerol (glycerol) to the 5% high amyl corn starch solution prepared by S2. Agitation at 25 °C for 24 h to give a highly amylose-cinnamaldehyde membrane solution.

[0038] S4. Using the solution casting method, take 50g of high-ryndolane corn starch-cinnamaldehyde film solution into a glass dish (16.5cm×11.5cm), dry at 50 °C, and obtain high amyl corn starch-coated cinnamaldehyde degradable antibacterial food packaging materials.

[0039] as Figure 1 A...

Embodiment 2

[0041] S1. Preparation of high amylose corn starch solution: Weigh 0.5 g of high amylose corn starch (64% of amylose containing amylose) dissolved in DMSO with a concentration of 4.5 g ≥ 99.5%.

[0042] S2. Preparation of cinnamaldehyde antibacterial solution: 0.2g of cinnamaldehyde was added to 0.5g of absolute ethanol solution at 25 °C, stirred to dissolve, and 40% cinnamaldehyde antibacterial solution was obtained.

[0043] S3. The high amylose corn starch solution prepared in the above S1, S2 steps and the cinnamaldehyde antibacterial solution were thoroughly stirred evenly, and then 4.5g of high amyl corn starch (containing 64% of amylose) and 0.75g of choline chloride were stirred, and placed under 100 °C conditions to be closed and heated for 15 hours to form a plastic high amyl corn starch- cinnamaldehyde-coated material.

[0044] S4. The plastic high amylose corn starch-cinnamaldehyde-coated material after treatment was repeatedly pressed roller, and 0.5g of glycerol was ...

Embodiment 3

[0047] S1. Preparation of high amylose corn starch solution: Weigh 0.5g of high amylose corn starch (containing 64% of amylose) dissolved in 4.5g concentration ≥ 99.5% DMSO.

[0048] S2. Add 0.2g polymethylsesquisiloxane to S1 high-amylosewax starch solution and stir well.

[0049]S3. Preparation of antibacterial solution of thyme essential oil: 0.2g of thyme essential oil was added to 0.5g of absolute ethanol solution at 25 °C, stirred to dissolve, and 40% thyme essential oil antibacterial solution was obtained.

[0050] S4. The high amylose corn starch solution prepared in the above S2, S3 steps and the antibacterial solution of thyme essential oil were thoroughly stirred, loaded into two layers of 4cm×5cm sealing film, and placed in a thermal reaction of 100 °C for 15h to form a plastic high lyxyl corn starch-thyme essential oil-coated material.

[0051] S5. The plastic high-lamina corn starch-thyme essential oil-coated material after treatment is repeatedly pressed and rolled,...

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Abstract

The invention discloses a degradable antibacterial food packaging material with high-amylose corn starch inclusion antibacterial essential oil and a preparation method of the degradable antibacterial food packaging material. The preparation method comprises the following steps: preparing a high-amylose corn starch solution and an antibacterial essential oil solution; stirring the prepared high-amylose corn starch solution and the antibacterial essential oil solution, continuously treating for 1-24 hours at the temperature of 0-150 DEG C, uniformly mixing, adding a plasticizing aid, and uniformly stirring at the temperature of 0-150 DEG C to obtain a blending system; the degradable antibacterial food packaging material is prepared by directly processing and forming the blending system or processing and forming the blending system after the blending system is clathrated with a biodegradable polymer. The stability of the antibacterial essential oil in the inclusion compound material is improved, and the release of the antibacterial essential oil is delayed; the inclusion compound with good antibacterial property and mechanical property is formed by combining the good film-forming property of the high-amylose corn starch; the food packaging material takes a full-biodegradable material as a raw material, can be completely degraded by microorganisms after being used, and does not cause pollution to the environment.

Description

Technical field [0001] The present invention relates to the field of degradable antibacterial food packaging technology, in particular to a high-straight corn starch-coated antibacterial essential oil degradable antibacterial food packaging material and preparation method thereof. Background [0002] Most traditional food packaging materials are made of petroleum-based plastics, and non-degradable and discarded petroleum-based plastics can cause soil, water pollution, greenhouse gas production, microplastics and other by-products. To address this problem, biodegradable and renewable biopolymers have been developed into thin film substrates to replace petroleum-based packaging materials. As a biodegradable natural polymer material, corn starch is a good alternative material for the preparation of thin film materials. It is an aggregated carbohydrate that consists of a large number of glucose units linked together by glycosidic bonds. It is considered a carbohydrate in the human di...

Claims

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Application Information

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IPC IPC(8): C08L3/02C08L91/00C08K5/07C08J5/18B65D65/46
CPCC08J5/18B65D65/466C08J2303/02C08J2491/00C08K5/07Y02W90/10
Inventor 张玉苍刘群万守梅杨丹敏莫忍莉周杰军
Owner JIMEI UNIV
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