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Origanum vulgare essential oil-carboxymethyl cellulose degradable active packaging film

A technology of carboxymethyl cellulose and degradable activity, applied in the field of oregano essential oil-carboxymethyl cellulose degradable active packaging film and its preparation, can solve the problem that it cannot be melted into the film, and the essential oil floats on the surface of the film after drying , pollution of nutrients and other issues, to achieve good mechanical properties, improve the effect of inhibition

Inactive Publication Date: 2019-03-29
NANJING AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the two major problems of contamination of food microorganisms and oxidation of nutrients, and provides a method that uses carboxymethyl cellulose and oregano essential oil as raw materials, and adds Tween to solve the problem that "oregano essential oil cannot be melted into the film, and after drying, The technical problem of essential oil floating on the surface of the film is made into an active packaging film with anti-oxidation and antibacterial ability, and the phenolic substances in the essential oil are slowly released through the micropores formed on the surface of the film to exert anti-oxidation and antibacterial effects, thereby ensuring Food quality, extending its shelf life

Method used

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  • Origanum vulgare essential oil-carboxymethyl cellulose degradable active packaging film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The oregano essential oil-carboxymethylcellulose active film is prepared by the following preparation method, and the steps are as follows:

[0036] Step (1): Weigh 1 g of carboxymethyl cellulose, add 100 mL of distilled water, and magnetically stir in a water bath at 80°C until completely dissolved; then add 0.5 mL of glycerin as a plasticizer and continue magnetic stirring for 1 hour to form a uniform, transparent membrane liquid;

[0037] Step (2), take 1 mL of oregano essential oil and 0.1 mL of Tween 80, vortex and mix them, add them to 100 mL of membrane liquid, and homogenize at a speed of 13,500 rpm for 4 minutes to obtain a film-forming base liquid;

[0038] Step (3), at 55 ° C, the film-forming base solution is left to defoam, and then pour the defoamed film-forming base solution into a petri dish with a diameter of 15 cm to form a film; transfer it to a blast drying oven , dried at 40°C for 20 h, and peeled off the film to obtain oregano essential oil-carbox...

Embodiment 2

[0040] The oregano essential oil-carboxy cellulose active membrane is prepared by the following preparation method, and the steps are as follows:

[0041] Step (1): Weigh 1 g of carboxymethyl cellulose, add 100 mL of distilled water, and magnetically stir in a water bath at 80°C until completely dissolved; then add 0.5 mL of glycerin as a plasticizer and continue magnetic stirring for 1 hour to form a uniform, transparent membrane liquid;

[0042] Step (2), take 2 mL of oregano essential oil and 0.2 mL of Tween 80, vortex and mix, add to 100 mL of membrane liquid, homogenize at a speed of 13500 rpm for 4 min to obtain a film-forming base liquid;

[0043] Step (3), at 55 ° C, the film-forming base solution is left to defoam, and then pour the defoamed film-forming base solution into a petri dish with a diameter of 15 cm to form a film; transfer it to a blast drying oven , dried at 40°C for 20 hours, and peeled off the film to obtain the oregano essential oil-carboxymethyl cell...

Embodiment 3

[0045] The oregano essential oil-carboxy cellulose active membrane is prepared by the following preparation method, and the steps are as follows:

[0046] Step (1): Weigh 1 g of carboxymethyl cellulose, add 100 mL of distilled water, and magnetically stir in a water bath at 80°C until completely dissolved; then add 0.5 mL of glycerin as a plasticizer and continue magnetic stirring for 1 hour to form a uniform, transparent membrane liquid;

[0047]Step (2), take 3mL oregano essential oil and 0.3mL Tween 80, vortex and mix, add to 100mL film liquid, homogenize at a speed of 13500rpm for 4min to obtain film-forming base liquid;

[0048] Step (3), at 55 ° C, the film-forming base solution is left to defoam, and then pour the defoamed film-forming base solution into a petri dish with a diameter of 15 cm to form a film; transfer it to a blast drying oven , dried at 40°C for 20 h, and peeled off the film to obtain oregano essential oil-carboxymethyl cellulose active film, which is d...

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Abstract

The invention discloses an origanum vulgare essential oil-carboxymethyl cellulose degradable active packaging film. The packaging film is prepared by the following steps: taking carboxymethyl cellulose as a raw material to prepare a film liquid with water and glycerol, adding origanum vulgare essential oil and a tween mixed solution into the film liquid, carrying out homogenizing to obtain a film-forming base solution, and carrying out tape casting on the film-forming base solution to obtain the packaging film. According to the invention, the origanum vulgare essential oil is added into a carboxymethyl cellulose film, and the combination of the essential oil with the carboxymethyl cellulose is improved through addition of the tween, so that the surface and the internal structure of the film are changed; micropores are increased, and then the essential oil can be slowly released from the film to exert activity, so that the film sample has obvious oxidation resistance, and the inhibitioncapability on growth of escherichia coli and staphylococcus aureus is remarkably improved. The origanum vulgare essential oil-carboxymethyl cellulose degradable active packaging film provided by theinvention can maintain good mechanical properties, is applied to food storage and fresh keeping, and is used as an inner package to coat meat products, the pH value and the surface color of the meat products are kept stable during storage, and oxidation of fat and growth and propagation of microorganisms can be effectively inhibited.

Description

technical field [0001] The invention belongs to the field of food packaging, and relates to an oregano essential oil-carboxymethyl cellulose degradable active packaging film and a preparation method thereof. Background technique [0002] As an important means of food storage and preservation, packaging is an indispensable link in the process of food storage, transportation and sales. The original purpose of food packaging is to protect food from oxygen, water vapor, ultraviolet erosion and biochemical contamination. The necessary food packaging can not only prevent the adverse effects of the external environment on the food or inhibit microbial contamination, but also reduce or prevent the oxidation and other biochemical reactions of the food itself. With the increasing level of science and technology, people have put forward higher requirements for the function and effect of food packaging. [0003] Commonly used packaging methods mainly include oxygen-permeable packaging...

Claims

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Application Information

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IPC IPC(8): C08L1/28C08L91/00C08K5/053C08J5/18B65D65/46
CPCB65D65/466C08J5/18C08J2301/28C08J2391/00C08J2401/28C08J2491/00C08K5/053
Inventor 张万刚谭瑞心周光宏
Owner NANJING AGRICULTURAL UNIVERSITY
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