Tea leaf comprehensive utilizing and deep processing method

A technology for deep processing and tea, which is applied in the field of comprehensive utilization and deep processing of tea. It can solve the problems of late start, backward deep processing technology, and the failure of natural tea extracts to meet environmental protection and hygiene quality and safety requirements, so as to achieve environmental protection, sanitation, quality and safety, and improve comprehensive utilization. benefit, increase the effect of product added value

Inactive Publication Date: 2013-04-03
中国测试技术研究院生物研究所
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  • Application Information

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Problems solved by technology

However, due to the late start of my country's tea deep processing industry and backward deep processing technology, mainly due to extensive growth, it is currently facing three major technical bottlenecks: ① Natural tea extracts cannot meet the environmental protection and hygiene quality and safety requirements of food, medicine, health care products and other industries ; ② The comprehensive utilization rate of tea deep-processing raw materials is low; ③ The added value of tea natural products is low

Method used

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  • Tea leaf comprehensive utilizing and deep processing method

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Effect test

Embodiment 1

[0038] Embodiment 1 adopts the method of the present invention to tealeaves comprehensive utilization deep processing

[0039] (1) Supercritical CO 2 Extraction: loading 80g / L, extraction pressure 5000psi, extraction temperature 45°C, extraction 3 times, each extraction time 40min, separation temperature 75°C, separate and collect to obtain the natural tea essence;

[0040] (2) Membrane filtration: through supercritical CO 2 Extracted raw materials are leached with boiling water, coarsely filtered to remove tea dregs, the filtrate is filtered through a membrane, the membrane pore size is MWCO30000, the operating pressure is 0.3MPa, the temperature is 40°C, and the intercepted liquid is concentrated and dried to obtain tea polysaccharide;

[0041] (3) Column chromatography: the membrane filtration permeate is concentrated and then loaded onto the chromatography column. The filler is Cross-linkedagaroseanddextran. The flow rate of the eluent is 1BV / h. Alkaloids; then reverse elu...

Embodiment 2

[0044] Embodiment 2 adopts the method of the present invention to tealeaves comprehensive utilization deep processing

[0045] (1) Supercritical CO 2 Extraction: loading 100g / L, extraction pressure 4500psi, extraction temperature 50°C, extraction 2 times, each extraction time 40min, separation temperature 70°C, separated and collected to obtain the natural tea essence;

[0046] (2) Membrane filtration: through supercritical CO 2 Extracted raw materials are leached with boiling water, coarsely filtered to remove tea dregs, the filtrate is filtered through a membrane, the membrane pore size is MWCO30000, the operating pressure is 0.4MPa, the temperature is 45°C, and the intercepted liquid is concentrated and dried to obtain tea polysaccharide;

[0047] (3) Column chromatography: The permeate from membrane filtration is concentrated and then loaded onto the chromatography column. SephadexLH-20 is used as the filler, and the flow rate of the eluent is 1BV / h. Alkaloids; then reve...

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Abstract

The invention belongs to the technical field of tea leaf deep processing and relates to a tea leaf comprehensive utilizing and deep processing method. The technical problem to be solved by the invention is to provide a tea leaf comprehensive utilizing and deep processing method. The leaf comprehensive utilizing and deep processing method comprises the following steps of: 1, supercritical CO2 extraction; 2, membrane filtration; 3, column chromatography; and 4, high-speed countercurrent separation. According to the invention, multiple components (natural essence, tea polysaccharide, tea pigment, alkaloid, tea polyphenol, catechinic acid, caffeine and the like) in tea leaves are simultaneously extracted through one process flow, and thus the comprehensive utilization rate of tea leaf deep processing is greatly increased.

Description

technical field [0001] The invention belongs to the technical field of tea deep processing, and relates to a tea comprehensive utilization deep processing method. Background technique [0002] In recent years, my country's tea deep processing industry has developed rapidly. It is estimated that by 2020, more than 50% of tea will be used as raw materials for food, medicine and health care products through deep processing. However, due to the late start of my country's tea deep processing industry and backward deep processing technology, mainly due to extensive growth, it is currently facing three major technical bottlenecks: ① Natural tea extracts cannot meet the environmental protection and hygiene quality and safety requirements of food, medicine, health care products and other industries ; ② The comprehensive utilization rate of tea deep-processing raw materials is low; ③ The added value of tea natural products is low. Technological innovation and upgrading will be the ine...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D473/12C07D311/62C08B37/00C07G99/00C09B61/00C11B9/02
CPCY02P20/544Y02P20/54
Inventor 谭和平李怀平吴媛媛冉莉萍管驰许洋
Owner 中国测试技术研究院生物研究所
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