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Preparation method of antibacterial preservative film loaded with nanoscale essential oil

A nano-scale, essential oil technology, applied in the field of food preservation, can solve the problems of unsatisfactory antibacterial effect, low content of essential oil in film, limited essential oil amount, etc., and achieves the effects of excellent antibacterial performance, simple preparation process and low price

Pending Publication Date: 2021-06-29
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods all have disadvantages such as unstable emulsions, heavy use of emulsifying additives or low content of essential oils
For example, use traditional emulsifiers to make essential oils into emulsions, and then mix the emulsions with film matrix to make antibacterial films. Due to the poor stability of traditional emulsions, or the need to add a large amount of emulsifiers and emulsification aids, this method has its own advantages. Limitations: After the essential oil is embedded in cyclodextrin and added to the membrane solution, because the amount of essential oil embedded in cyclodextrin molecules is very limited, the content of essential oil in the membrane is too low, and the antibacterial effect is not ideal; the essential oil is wrapped in a hydrocolloid and then further Add membrane solution after preparing nanocapsules, this method is complex and the encapsulation efficiency is not high

Method used

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  • Preparation method of antibacterial preservative film loaded with nanoscale essential oil
  • Preparation method of antibacterial preservative film loaded with nanoscale essential oil

Examples

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Effect test

Embodiment 1

[0032] A method for preparing an antibacterial preservative film loaded with nanoscale essential oils, comprising the following steps:

[0033] (1) Preparation of nanoscale oregano essential oil emulsion:

[0034] Weigh an appropriate amount of xanthan gum, add it to 40°C water and stir at a speed of 150rpm until dissolved, and make a xanthan gum solution with a mass concentration of 2%;

[0035] Add β-cyclodextrin into water, heat and dissolve at 60°C to obtain a β-cyclodextrin solution with a volume content of 2%, and add oregano essential oil to the β-cyclodextrin solution, wherein the amount of oregano essential oil added is β - 1.5 times the volume of the cyclodextrin solution, whipped at a high speed of 12000rpm for 1min to form a semi-fluid emulsion;

[0036] Add the above-mentioned xanthan gum solution to the obtained semi-fluid emulsion, so that the amount of xanthan gum added is 0.2% of the volume of the semi-fluid emulsion, and whip it again at a high speed of 1200...

Embodiment 2

[0043] A method for preparing an antibacterial preservative film loaded with nanoscale essential oils, comprising the following steps:

[0044] (1) Preparation of nanoscale citral emulsion:

[0045] Weigh an appropriate amount of xanthan gum, add it to 40°C water and stir until dissolved at 150rpm to make a xanthan gum solution with a mass concentration of 4%;

[0046] Add β-cyclodextrin into water, heat to 60°C to dissolve to obtain a β-cyclodextrin solution with a volume content of 3%, add citral essential oil to the β-cyclodextrin solution, and the amount of citral essential oil added is β - 1.8 times the volume of the cyclodextrin solution, whipped at a high speed of 12000 rpm for 3 minutes to form a semi-fluid emulsion;

[0047] Add the above-mentioned xanthan gum solution to the obtained semi-fluid emulsion, so that the amount of xanthan gum added is 0.4% of the volume of the semi-fluid emulsion, whipped at a high speed of 12000rpm for 1min, further increase the stabili...

Embodiment 3

[0054] A method for preparing an antibacterial preservative film loaded with nanoscale essential oils, comprising the following steps:

[0055] (1) Preparation of nanoscale citral emulsion:

[0056] Weigh an appropriate amount of xanthan gum, add it to 40°C water and stir at a speed of 150rpm until dissolved, and make a xanthan gum solution with a mass concentration of 4%;

[0057] Add β-cyclodextrin into water, heat to 60°C to dissolve to obtain a β-cyclodextrin solution with a volume content of 3%, add 1.5 times the volume of citral essential oil to the β-cyclodextrin solution, and run at a high speed of 12000rpm Whip for 3 minutes to form a semifluid nanoscale citral emulsion;

[0058] Add above-mentioned xanthan gum solution in gained semi-fluid state emulsion, make xanthan gum addition be 0.2% of semi-fluid state emulsion volume, 12000rpm high-speed whipping 1min, further increase emulsion stability, obtain the citral emulsion of nanoscale, spare.

[0059] (2) prepare ...

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Abstract

The invention provides a preparation method of an antibacterial preservative film loaded with nanoscale essential oil. The preparation method comprises the following steps: preparing an O / W type Pickering emulsion with high stability and high essential oil content from cyclodextrin, uniformly mixing the emulsion with a water-based chitosan film matrix, and preparing the antibacterial film with uniformly distributed essential oil through a tape casting method. The essential oil antibacterial film is uniform in texture, is colorless, semitransparent or yellowish and semitransparent according to the amount of essential oil, has certain mechanical properties, can be directly made into a film for use or used for coating the inner surface of a packaging material or the surface of food, can slowly release the antibacterial essential oil, is used for packaging food to achieve the purpose of prolonging the shelf life, and is a novel nano-antibacterial active packaging material for slow-release food.

Description

technical field [0001] The invention relates to a preparation method of an antibacterial fresh-keeping film loaded with nanoscale essential oil, and belongs to the technical field of food fresh-keeping. Background technique [0002] Food preservation has always been a major problem faced by my country's food industry. In order to maintain the storage stability of food, it is often necessary to add a large amount of preservatives to food, which brings great hidden dangers to food safety. Food antibacterial packaging is to use bactericidal packaging materials to inhibit the growth of food microorganisms during storage, thereby prolonging the shelf life of food. The use of antibacterial film materials is a major way of antibacterial packaging. Most antibacterial films combine antibacterial agents on the film carrier in a blended manner to endow the film with antibacterial properties. The natural antibacterial agents used mainly include plant essential oils, antimicrobial pept...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L5/08C08L5/16C08L91/00C08L5/00
CPCC08J5/18C08J2305/08C08J2405/16C08J2491/00C08J2405/00
Inventor 李学红陆勇高素利
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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