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Lyophobic water-retention garlic oil containing bentonite/PVA (Polyvinyl Alcohol) sterilization preservative film and preparation method thereof

A technology of bentonite and garlic oil, which is applied in the field of bentonite/PVA sterilizing plastic wrap and its preparation, can solve the problems of bentonite dispersity to be improved and lack of bactericidal effect, and achieve enhanced hydrophobicity and moisture retention, prolonging bactericidal life, and improving water resistance Effect

Inactive Publication Date: 2017-05-31
杜克玲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In his master's degree thesis "Preparation of Bentonite / PVA Preservative Film and Its Application in Mango Preservation", Huang Huirong prepared a kind of preservative film by using bentonite and polyvinyl alcohol, but it has no bactericidal effect. Dispersion in vinyl alcohol needs to be improved

Method used

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Effect test

Embodiment

[0019] A hydrophobic and moisturizing bentonite / PVA sterilizing plastic wrap containing garlic oil is characterized in that it is made of the following raw materials in parts by weight:

[0020] Carboxymethyl chitosan 3, minced garlic 30, Tween 80 2, polyvinyl alcohol 60, ferrous chloride 2, sucrose 3, sodium alginate 2, pyridoxal phosphate 0.5, bentonite 25, β-cyclodextrin 40 , sodium dodecyl sulfonate 5, glycerin 3, deionized water 1000, absolute ethanol 600.

[0021] The preparation method of described a kind of hydrophobic and moisturizing bentonite / PVA sterilizing plastic wrap containing garlic oil is characterized in that it is made by the following steps:

[0022] a. Disperse minced garlic in 80-100 parts of deionized water, add ferrous chloride, sucrose, pyridoxal phosphate, enzymatically hydrolyze for 50-70 minutes at a temperature of 30-40°C and a pH of 6-7, then add 80-100 parts of absolute ethanol, ultrasonically extracted for 40-60 minutes to obtain an ethanol so...

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PUM

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Abstract

The invention discloses a lyophobic water-retention garlic oil containing bentonite / PVA (Polyvinyl Alcohol) sterilization preservative film and a preparation method thereof. The lyophobic water-retention garlic oil containing bentonite / PVA sterilization preservative film is prepared from the following raw materials: 2-3 parts of carboxymethyl chitosan, 20-30 parts of chopped garlic, 1-2 parts of Tween 80, 50-60 parts of polyvinyl alcohol, 1-2 parts of ferrous chloride, 2-3 parts of cane sugar, 0.5-2 parts of sodium alginate, 0.2-0.5 part of pyridoxal phosphate, 15-25 parts of bentonite, 30-40 parts of beta-cyclodextrin, 2-5 parts of sodium dodecyl sulfate, 2-3 parts of glycerinum, 600-1000 parts of deionized water and 100-600 parts of absolute ethyl alcohol. As the garlic oil is carried by the bentonite and is coated by the cyclodextrin, the problem that organic sulfide has pungent smell is solved, a slow-release function is achieved, the sterilization service life of the preservative film is prolonged, the dispersibility of the bentonite in a polyvinyl alcohol substrate is improved, and the water resistance of the preservative film is improved; due to modification of the chitosan, the lyophobic water-retention property of the preservative film is improved.

Description

technical field [0001] The invention relates to a fresh-keeping film and a preparation method thereof, in particular to a hydrophobic and moisturizing bentonite / PVA sterilizing fresh-keeping film containing garlic oil and a preparation method thereof. Background technique [0002] Fresh-keeping film plays an important role in the storage and preservation of fruits and vegetables. Different fruits and vegetables have different requirements on the air permeability and moisture permeability of the fresh-keeping film due to their different water content and respiratory strength. And other problems, because PVA macromolecule contains a large number of light groups, has extremely strong hydrophilicity, makes the water absorption rate of PVA film very high, has affected the application of PVA film on the food preservation on the contrary. Studies have shown that the small size effect and macroscopic quantum dangerous channel effect of nanoparticles can interact with the unsaturated...

Claims

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Application Information

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IPC IPC(8): C08L29/04C08L5/08C08L5/04C08L5/16C08K13/06C08K9/12C08K9/10C08K5/00C08K3/34C08K5/42C08K5/053C08J5/18
CPCC08J5/18C08J2329/04C08J2405/08C08L29/04C08L2203/16C08L2205/02C08L2205/035C08L5/08C08L5/04C08L5/16C08K13/06C08K9/12C08K9/10C08K5/0058C08K3/346C08K5/42C08K5/053
Inventor 杜克玲
Owner 杜克玲
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