Bleaching lac nanometer preservative for pear and pear refreshing method

Abstract

The invention provides a bleached lac nano fresh-keeping agent for pears, and is characterized in that the fresh-keeping agent consists of the following raw materials by mass percentage: 8.3-62.5 percent of water solution with 24 percent of bleached lac, 0.1-0.8 percent of silicon dioxide nano materials, 2.0-10.0 percent of pepper extract, 2.0-10.0 percent of stemona root extract, 2.0-10.0 percent of magnolia officinalis extract, 0.5-2.0 percent of sodium dehydroacetate, 50-200ppm of gibberellin and water as the allowance. The fresh-keeping agent can further improve film-forming property of the bleached lac film and air regulating performance of the film; while having good moisture retention, antisepsis and disease resistance properties, the fresh-keeping agent can selectively penetrate gases, such as carbon dioxide, etc., and effectively prevents fruits from being damaged by carbon dioxide; after being smeared with the agent for fresh-keeping, the pears can be stored for 90-100 days at normal temperature without any refrigeration equipment, and commodity rate is as high as 90 percent, water loss rate is less than or equal to 10 percent; in addition, ingredients of the fresh-keeping agent are all natural materials and food additives, thus remaining no toxicity residue and bringing no pollution to the environment.

Description

technical field [0001] The invention relates to a fresh-keeping agent, in particular to a fresh-keeping agent for pears, and belongs to the technical field of fresh-keeping of fruits and vegetables. Background technique [0002] At present, the fresh-keeping technologies of fruits and vegetables used at home and abroad mainly include: decompression fresh-keeping technology, low-temperature refrigeration technology, controlled atmosphere storage technology, film preservation technology, radiation and electromagnetic storage technology, coating film preservation technology, etc. Among them, low-temperature refrigeration method and controlled atmosphere storage method 1. The radiation storage method and the decompression preservation technology need to be equipped with corresponding equipment, which not only requires a large investment, high preservation costs, but also consumes energy, so it does not meet the needs of energy-saving and consumption-reducing development, and a ce...

AI Technical Summary

Problems solved by technology

The physiological decay of pears after picking is fast under natural conditions, and the tissues are easily damaged, and they are very susceptible to pathogenic microorganisms, resulting in a rapid decline in quality and a high rot rate.