Fruit and vegetable preservative film, and preparation method and application thereof

A technology for fruit and vegetable preservation and film-forming emulsion, which is applied in transportation and packaging, rayon manufacturing, textiles and papermaking, etc. It can solve the problems of water source, soil, air pollution, unfriendly environment, and difficult to degrade, and achieve easy acceptance and use. , the best antibacterial and fresh-keeping effect, the effect of good mechanical properties

Active Publication Date: 2022-02-18
CHENGDU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently commonly used plastic packaging materials are mainly petroleum-based plastics. This type of material has many excellent properties, such as good stability, good water resistance, acid and alkali resistance, and high light transmittance. It is the material of choice for most of modern life, but This kind of material is often accompanied by the disadvantages of being difficult to degrade in a short time, poor air permeability, and easy to burn.
People's waste disposal of packaging materials includes landfill and incineration. These two methods are extremely unfriendly to the environment and easily cause serious pollution of water sources, soil and air.

Method used

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  • Fruit and vegetable preservative film, and preparation method and application thereof
  • Fruit and vegetable preservative film, and preparation method and application thereof
  • Fruit and vegetable preservative film, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1, the preparation of medicine of the present invention

[0034] Formula: pepper essential oil 10%, polyvinyl alcohol (PVA1788) 12%, β-cyclodextrin 2%, and the balance is water.

[0035] Preparation:

[0036] (1) take raw materials by proportioning;

[0037] (2) Take polyvinyl alcohol, dissolve it in purified water, and make a film-forming solution with a mass volume concentration of 12%, then add β-cyclodextrin, stir for 30 minutes, then add Chinese prickly ash essential oil, and stir for 30 minutes to obtain a composite film solution;

[0038] (3) Put the composite membrane solution in an ultrasonic instrument for degassing for 5 minutes, repeat the degassing 3 times, and let it stand for 0.5-1 hour to remove air bubbles to obtain a film-forming emulsion;

[0039] (4) Place the film-forming emulsion in a 20mL syringe, the spinning voltage is 20kV, the advancing speed of the syringe film-forming emulsion is 0.25mL / h, the distance from the receiving plate t...

Embodiment 2

[0040] Embodiment 2, the preparation of medicine of the present invention

[0041] Formula: pepper essential oil 9.5%, polyvinyl alcohol (PVA1788) 11.5%, β-cyclodextrin 1.5%, and the balance is water.

[0042] Preparation method: with embodiment 1

Embodiment 3

[0043] Embodiment 3, the preparation of medicine of the present invention

[0044] Formula: pepper essential oil 10.5%, polyvinyl alcohol (PVA1788) 12.5%, β-cyclodextrin 2.5%, and the balance is water.

[0045] Preparation method: with embodiment 1

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Abstract

The invention discloses a fruit and vegetable preservative film. The preservative film is prepared from, by weight, 9.5-10.5% of pepper essential oil, 11.5-12.5% of polyvinyl alcohol, 1.5-2.5% of cyclodextrin, and the balance of water. According to the preservative film provided by the invention, the pepper essential oil with an antibacterial effect is selected as an antibacterial agent, so that breeding of common microorganisms in food can be effectively inhibited, and the preservative and fresh-keeping period of the food is prolonged. The natural biological antibacterial agent provides a new thought for solving the food safety problem.

Description

technical field [0001] The invention belongs to the field of food packaging materials, and in particular relates to a fresh-keeping film for fruits and vegetables, a preparation method and application thereof. Background technique [0002] With the increasing attention of human beings to the environment and the increasing demand for the quality of food, medicine, daily necessities, etc., all walks of life have higher standards for various plastic packaging, and hope to be friendly to the ecological environment on the basis of excellent performance . Currently commonly used plastic packaging materials are mainly petroleum-based plastics. This type of material has many excellent properties, such as good stability, good water resistance, acid and alkali resistance, and high light transmittance. It is the material of choice for most of modern life, but This kind of material is often accompanied by the disadvantages of being difficult to degrade in a short time, poor air permeab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/728D01D5/00D01F8/10D01F8/18D01F1/10B65D65/38B65D81/24
CPCD04H1/728D01D5/0015D01F8/10D01F8/18D01F1/103B65D65/38B65D81/24Y02W90/10
Inventor 胡一晨章津铭张欢张晨邹亮
Owner CHENGDU UNIV
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