Low-temperature quick micro-freezing fresh-keeping technology for melons and fruits

Abstract

The invention provides a low-temperature quick micro-freezing fresh-keeping technology of melons and fruits. The low-temperature quick micro-freezing fresh-keeping technology adopts a high-tech biological technology, the ice crystal condition of organism cells under a low-temperature condition is studied, a low temperature and ultra-low temperature technology and a newly-invented micro-freezing fluid from natural components is applied to the melons and fruits frozen for fresh keeping, an innovative freezing curve is applied, and the melons and fruits are directly frozen in the micro-freezing fluid for fresh keeping. According to kinds and sizes of materials, freezing fresh keeping of the melons and fruits is completed in 6-15 minutes or 15-30 minutes, which is presented in the respects that cell membranes of the melons and fruits after the freezing fresh keeping are not frosted to be cracked and are under an organism micro-freezing condition; and then refrigerating is performed so as to maintain the melons and fruits after the freezing fresh keeping fresh in quality. The low-temperature quick micro-freezing technology is an innovative micro-freezing fresh-keeping technology in theworld, the cells of the melons and fruits are kept not cracked, and the transformation of polysaccharides substances in the melons and fruits is improved; and when freezing fresh-keeping is performedon the fresh melons and fruits in the shortest time according to the freezing curve, after the fresh melons and fruits are stored under the refrigerating condition for within 12 months, the fresh quality of the fresh melons and fruits is still maintained.

Description

1. Technical field [0001] The invention relates to the technical field of low-temperature fresh-keeping of melons and fruits, and proposes a low-temperature rapid micro-freezing fresh-keeping technology of melons and fruits. 2. Background technology [0002] We have found that in nature, the somatic cells of hibernating animals have a natural antifreeze mechanism, such as frogs, loach, crucian carp, and other animals and aquatic animals that live in subtropical and frigid regions. The polysaccharide antifreeze substances of somatic cells have a sharp increase in the number of double bonds of fatty acid molecules in their subcellular membranes. The antifreeze is studied from the perspective of cell dynamics, so that the somatic cells are not frozen due to the drop in external temperature. Crystal frost heaves and ruptures; organisms preserve their living bodies by keeping their body cells in a slightly frozen state, and recover and revive when the temperature rises. The evol...

AI Technical Summary

Problems solved by technology

In the industrial production process of melon and fruit freezing and cold storage, when the temperature of the freezing equipment is lowered, ice crystals are first produced between the melon and fruit cells, and as the temperature gradually decreases, ice crystals are produced in the cells again, which leads to The pressure is not balanced, which destroys the protoplasm and cell membrane, leading to cell lysis and death

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