Fruit fresh-keeping film and preparation method thereof

Abstract

The invention discloses a fruit fresh-keeping film. The fresh-keeping film is prepared from the following components: 50-70 parts by weight of starch, 15-30 parts by weight of polyvinyl alcohol, 5-8 parts by weight of bio-based resin, 1-3 parts by weight of sodium alginate, 1-3 parts by weight of fatty acid, 1.5-4.5 parts by weight of butanediol, 0.4-1 part by weight of sorbitol, 1-5 parts by weight of titanium dioxide, 1-5 parts by weight of zinc oxide, and 2-6 parts by weight of ultra-fine calcium carbonate. The method provided by the invention adopts the starch, the polyvinyl alcohol, the bio-based resin, the sodium alginate, the fatty acid, the butanediol, the sorbitol, the titanium dioxide, the zinc oxide and the ultra-fine calcium carbonate as raw materials, and each component is acted and affected with each other, so that the prepared fresh-keeping film not only has good antibacterial and bacteriostatic functions, but also can be completely degraded, and has no pollution to theenvironment and no residues.

Description

technical field [0001] The invention relates to the technical field of agricultural film, in particular to a fruit fresh-keeping film and a preparation method thereof. Background technique [0002] Commonly used fresh-keeping methods for fruits and vegetables mainly include refrigeration preservation, modified atmosphere preservation, radiation preservation and ordinary plastic wrap preservation. Among them, the fresh-keeping film fresh-keeping method is a low-cost, simple-to-operate, wide-applicability, stable-performance fruit and vegetable storage and fresh-keeping method, and has a better market development prospect. However, the composition of fruits and vegetables is quite different. Fruits mainly contain high sugar and high water content, which are easy to breed various bacteria, and the respiration of fruits is stronger, and the water evaporates quickly. At present, most of the plastic wraps used in the fresh-keeping method of plastic wrap are fruits and vegetables. ...

AI Technical Summary

Problems solved by technology

However, the composition of fruits and vegetables is quite different. Fruits mainly contain high sugar content and high water content, which are easy to breed various bacteria, and the respiration of fruits is stronger, and the water evaporates quickly. At present, most of the plastic wraps used in the fresh-keeping method of plastic wrap are fruits and vegetables. Plastic wrap, which can be used on both vegetables and fruits, is not ideal for fruit preservation