Composite allium mongolicum regel preservative containing tea polyphenol and preparation method and use method thereof

Abstract

The invention relates to the technical field of food preservation, and discloses a composite allium mongolicum regel preservative containing tea polyphenol. The preservative is prepared by mixing teapolyphenol, chitosan and water. Compared with the prior art, the preservative has the beneficial effects that the process is simple, the operation is convenient, the use and storage effects of the composite preservative are better than those of a preservative containing simple tea polyphenol and chitosan, the storage period can be prolonged by about 5 days, and the preservative is suitable for industrial production; the composite allium mongolicum regel preservative containing tea polyphenol prepared by using the method can ensure relatively low weight loss ratio and rotting rate under relatively high sensory evaluation score; meanwhile, the preservative can effectively inhibit the generation of nitrate and nitrite in the storage and transportation process of allium mongolicum regel, so that relatively high safety quality of vegetables can be ensured; and the preservative can inhibit respiration to slow down the consumption of nutrient substances in the storage period, so that relatively high nutritional value and commercial quality can be kept.

Description

technical field [0001] The invention belongs to the technical field of food preservation, and in particular relates to a compound preservative for shallot containing tea polyphenols and a preparation method and application method thereof. Background technique [0002] Sand onion has become a valuable wild natural resource in the Inner Mongolia Autonomous Region. Planting sand onion is an important way for local farmers and herdsmen to get rid of poverty and become rich. It contains various nutrients and trace elements needed by the human body, and also has high medicinal value After the sand onion is harvested, it is very vulnerable to the infection of pathogens and the loss of water and nutrients, and it is accompanied by rot. Therefore, the long-distance transportation and fresh-keeping technical problems of sand onions have become increasingly prominent, which has become a major bottleneck problem restricting the development of the industry. [0003] Sand onion is a leaf...

AI Technical Summary

Problems solved by technology

[0003] Sand onion is a leafy vegetable with high water content and large leaf surface area. During the harvesting process, it is inevitably mechanically damaged, which accelerates the loss of water and nutrients; during long-distance transportation, if not used Reasonable storage and preservation methods can easily cause the loss of nutrients, the decline of sensory quality, and seriously cause rot and loss of commercial value.

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