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Degradable preservative film special for edible mushrooms and preparation method

A technology of plastic wrap and edible fungus, which is applied in the field of degradable plastic wrap for edible fungus and its preparation, which can solve the problems of lack of plastic wrap and achieve the effects of improving hydrophobicity, weakening nano-action energy, improving dispersion and compatibility

Active Publication Date: 2022-04-26
INST OF AGRO FOOD SCI & TECH CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the above-mentioned problems in the preparation process of the fresh-keeping film and the lack of special fresh-keeping film for edible fungi, the present invention provides a kind of plastic wrap with good air permeability, effective inhibition of anaerobic respiration of edible fungi, and integration of moisturizing, air conditioning, buffering and antibacterial functions. Degradable plastic wrap for edible fungus and preparation method thereof

Method used

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  • Degradable preservative film special for edible mushrooms and preparation method
  • Degradable preservative film special for edible mushrooms and preparation method
  • Degradable preservative film special for edible mushrooms and preparation method

Examples

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preparation example Construction

[0048] The preparation method of the above-mentioned special degradable plastic wrap for edible fungus, the steps are as follows:

[0049] (1) Preparation of PLA / PBAT / PCL / PVA quaternary blend degradable cling film base material: First, use dimethyl sulfoxide (DMSO) as solvent, add PVA (polyvinyl alcohol) to prepare a mass fraction of 5%- 10% solution, then keep the water bath at 120-145°C, add film-forming substrates PLA (polylactic acid), PBAT (polyadipic acid / butylene terephthalate) with a total mass of 8%-10% of the solution in the water bath in sequence Ester), PCL (polycaprolactone), PLA:PBAT:PCL mass ratio is 30~40:60~70:2~5, stir evenly, after completely dissolved, cool down, then vacuum dry at 80℃ to constant weight , and pulverized to obtain a quaternary blend degradable plastic wrap substrate;

[0050] (2) Preparation of slow-release nano-intercalation antibacterial additives: first, nano-TiO 2 Carry out physical ultrasonic synergistic chemical coupling modificatio...

Embodiment 1

[0074] A special degradable plastic wrap for edible fungus, comprising the following raw materials in parts by weight: 100 parts of PLA / PBAT / PCL / PVA quaternary blended degradable plastic wrap substrate, 2 parts of slow-release nano-intercalated antibacterial additives, breathable and anti-fog 2 parts of additives, 1 part of degradation accelerator.

[0075] The preparation method of the special degradable plastic wrap for edible fungi is as follows:

[0076] First, wet the quaternary blended degradable plastic wrap base material with a certain amount of acetone solvent, then add antibacterial additives, breathable anti-fog additives and degradation accelerators in proportion, first stir at 70rpm at low speed for 2min, then at 150rpm at high speed Stir for 3 minutes to obtain a mixed material in which the additives are evenly adsorbed on the substrate; after that, the twin-screw extruder melts and blends and repeats the granulation twice to improve the uniformity of the masterb...

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Abstract

The invention discloses a degradable preservative film special for edible mushrooms. The degradable preservative film is prepared from, by weight, 100 parts of PLA / PBAT / PCL / PVA quaternary blending degradable preservative film base material, 2-5 parts of slow-release nano-intercalation antibacterial auxiliaries, 2-3 parts of breathable anti-fog auxiliaries and 1-3 parts of degradation promoting auxiliaries. Aiming at the problems in the preparation process of the preservative film and the lack of the special preservative film for the edible fungi, the invention provides the special degradable preservative film for the edible fungi, which has good air permeability, effectively inhibits anaerobic respiration of the edible fungi and integrates moisturizing, controlled atmosphere, buffering and antibacterial functions, and the preparation method.

Description

technical field [0001] The invention belongs to the technical field of food, in particular to a special degradable fresh-keeping film for edible fungi and a preparation method thereof. Background technique [0002] Edible fungi are a class of fungi with large fleshy fruiting bodies or sclerotia that can be eaten by humans. my country is the world's largest producer and consumer of edible fungi. According to data from the China Edible Fungi Association, the annual output of edible fungi in my country has reached more than 39 million tons in 2019. Because of its high protein, high fiber, low fat, low sugar characteristics of "two highs and two lows" advantages, it is recommended as one of the top ten healthy foods. The consumption point of edible fungi lies in its unique flavor and fresh taste, but due to its physiological characteristics such as high water content, crisp tissue, and postharvest respiratory consumption, it poses challenges to the freshness and quality of edib...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/04C08L29/04C08L3/02C08K13/06C08K9/12C08K9/04C08K9/00C08K3/28C08K3/22C08K3/34C08K3/26C08K3/36C08K5/101C08K5/098C08K3/16C08J9/12C08J5/18
CPCC08J9/122C08J9/0095C08J9/009C08J9/0066C08J9/0023C08J9/008C08J9/0061C08J2367/02C08J2467/04C08J2429/04C08J2403/02
Inventor 潘艳芳唐选明贾晓昱赵志永
Owner INST OF AGRO FOOD SCI & TECH CHINESE ACADEMY OF AGRI SCI
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