Agaricus bisporus film-free preservative and use thereof

Abstract

The invention discloses an agaricus bisporus film-free preservative and use thereof. The agaricus bisporus film-free preservative is an aqueous solution of the following components in percentage by mass: 1.2 to 2.5 percent of low-molecular-weight(1,000 to 3,000) chitosan oligosaccharide, 0.4 to 0.6 percent of citric acid, 0.4 to 0.6 percent of sodium chloride, 0.2 to 0.3 percent of vitamin C, 0.0001 to 0.0003 percent of cysteine. Compared with the agaricus bisporus preservative in the prior art, the agaricus bisporus film-free preservative disclosed by the invention has the prominent advantages that: the edible low-molecular-weight chitosan oligosaccharide is used as a main ingredient; film is not formed; color is not changed; the operation is convenient; the shelf period can be prolonged by 3 to 5 days at normal temperature (25 DEG C) and by 15 to 20 days at a low temperature (5 DEG C); and the preservative is edible, pollution-free, environment-friendly and low in cost.

Description

technical field [0001] The invention relates to storage and fresh-keeping technology of agricultural products, in particular to a filmless fresh-keeping agent of Agaricus bisporus and application thereof. Background technique [0002] Agaricus bisporus, also known as white mushroom and sea mushroom, is the most widely cultivated, most productive and most widely consumed edible fungus in the world. In recent years, my country's mushroom cultivation has developed rapidly, and its output and export volume surpassed that of the United States and ranked first in the world. Agaricus bisporus not only has high nutritional value, is rich in protein, amino acids, vitamins and minerals, but also has good health benefits such as lowering blood pressure, lowering blood fat, anti-tumor, anti-bacterial, anti-inflammatory and liver protection. However, there is no protective structure on the surface of the cap of Agaricus bisporus, which cannot prevent external physical damage, microbial ...

AI Technical Summary

Problems solved by technology

[0003] At present, the fresh-keeping technologies of Agaricus bisporus mainly include low-temperature air-conditioning and fresh-keeping agents. Low-temperature air-conditioning is expensive and inconvenient to operate.

There are two types of antistaling agents: one is based on the formula of sodium metabisulfite, which is easy to cause chemical pollution, the effect of preservation is not good, and there are toxic residues, which do not meet the development requirements of green food; The first kind is fresh-keeping by coating film based on edible polymer chitosan. The mechanism of this kind of preservative is to form a protective film on the surface of edible fungus. It has the dual advantages of film preservation and modified atmosphere preservation, and can achieve antibacterial Anti-corrosion effect, so the fresh-keeping effect is remarkable, which can meet the fresh-keeping requirements of edible fungus storage, transportation and sales, but it is easy to cause changes in the appearance and color of Agaricus bisporus, reducing its commerciality, and at the same time, the fresh-keeping time is not ideal.