Shiitake mushroom stick non-cut water-holding film with fungicidal preservative effects and preparation method thereof

Abstract

The invention discloses shiitake mushroom stick non-cut water-holding film with fungicidal preservative effects, produced from, by weight, 62-81 parts of polylactic acid, 32-41 parts of starch, suitable distilled water, 15-20 parts of Na-montmorillonite, 4-10 parts of sodium tripolyphosphate, 2-6 parts of urea, suitable glycine-hydrochloric acid buffer solution, suitable dichloromethane, 1-3 parts of glycerol, 1-2 parts of propanetriol, 1-4 parts of chitosan, suitable acetic acid, 0.05-0.2 part of ethyl vanillin, and 0.05-0.1 part of potassium sorbate. Polylactic acid is used as a basic film-forming agent combined with starch and montmorillonite to obtain the non-cut water-holding film, shiitake mushroom may grow out by the aid of its growing force, deformed mushroom is avoided, the shape and quality of shiitake mushroom are improved greatly, the non-cut water-holding film has good water-holding property, can effectively inhibit the evaporation of water in the mushroom sticks and can effectively maintain water inside and breathability.

Description

technical field [0001] The invention relates to the technical field of light industrial products, in particular to a cut-free water-retaining film for mushroom sticks with bactericidal and antiseptic effect and a preparation method thereof. Background technique [0002] At present, the conventional cultivation method of bagged shiitake mushrooms is to use ordinary polyethylene resin plastic film bags for direct loading. During the fruiting process, when mushroom buds appear on the mushroom sticks, due to the strong toughness of the polyethylene resin plastic film bags, a large amount of material is required. The plastic bag covering the mushroom sticks is manually cut by manpower, so that the mushroom buds can break through the resistance and drill out of the bag to grow into shiitake mushrooms. However, this process is labor-intensive and time-consuming, which will not only cause malformation of edible fungi, but also easily cause bacterial and other miscellaneous bacteria ...

AI Technical Summary

Problems solved by technology

However, this process is labor-intensive and time-consuming, which will not only cause deformity of edible fungi, but also easily cause infection by bacteria and other miscellaneous bacteria, and the discarded plastic bags after planting will also produce white pollution, causing environmental problems

[0003] Starch is an environmentally friendly film-forming material that has been researched and developed at home and abroad, but its application is limited due to its low film-forming strength. In the article "Application in Degradable Plastic Film", the porous starch with increased surface area compared to the original starch was prepared first, and then the phosphate starch with a higher degree of substitution was obtained by dry process, and then the modified starch was blended with PVA, and passed Fully biodegradable plastics are prepared by single-screw extruder extrusion granulation, compression molding and other processes, and the mechanical properties of the obtained biodegradable film are improved, and the biodegradability is also improved