Low-temperature quick micro-freezing fresh-keeping technology for tea leaves

Abstract

The invention provides a low-temperature quick micro-freezing fresh-keeping technology of tea leaves. 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 tea leaves frozen for fresh keeping, an innovative freezing curve is applied, and the tea leaves are directly frozen in the micro-freezing fluid for fresh keeping. According to kinds and sizes of materials, freezing fresh keeping of the tea leaves is completed in 6-15 minutes or 15-30 minutes, which is presented in the respects that cell membranes of the tealeaves 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 tea leaves after thefreezing fresh keeping fresh in quality. The low-temperature quick micro-freezing technology is an innovative micro-freezing fresh-keeping technology in the world, the cells of the tea leaves are kept not cracked, and the transformation of polysaccharides substances in the tea leaves is improved; and when freezing fresh-keeping is performed on the fresh tea leaves in the shortest time according to the freezing curve, after the fresh tea leaves are stored under the refrigerating condition for within 12 months, the fresh quality of the fresh tea leaves is still maintained.

Description

1. Technical Field [0001] The invention relates to the technical field of low-temperature tea fresh-keeping technology, and proposes a low-temperature rapid micro-freezing fresh-keeping technology for tea. 2. Background technology [0002] We found that in nature, hibernating animals have somatic cells that naturally freeze and resist freezing. For example, frogs, loach, crucian carp, and other animals and aquatic animals living in subtropical and frigid zones, they will increase when the atmospheric temperature drops sharply. The polysaccharide antifreeze substance of somatic cells has a sharp increase in the number of double bonds of fatty acid molecules in its subcellular membranes. The freezing and antifreeze study of cell dynamics has caused somatic cells to not be frozen due to the drop in the outside temperature. Crystal frost heave ruptures; living organisms are kept in a slightly frozen state with their somatic cells, and the living organisms are preserved, resurrected a...

AI Technical Summary

Problems solved by technology

During the industrialized production process of tea freezing and cold storage, when the temperature of the freezing equipment drops, ice crystals are first produced between the tea cells, and as the temperature gradually decreases, ice crystals are produced in the cells again, which causes the pressure inside and outside the cells to vary. balance, thereby destroying the protoplasm and cell membrane, resulting in cell lysis and death

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