Method for extracting tea polyphenol from Litsea coreana

A technology of tea polyphenols and eagle tea, applied in the field of extraction of active ingredients in plants, can solve the problems of expensive equipment, difficult promotion, low extraction efficiency, etc., to improve quality and safety, high product safety, and low separation cost Effect

Inactive Publication Date: 2008-01-09
舒阿庆
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the extraction efficiency of this method is not high, and the equipment is expensive, so it is difficult to popularize in industrial production.

Method used

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  • Method for extracting tea polyphenol from Litsea coreana

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Embodiment Construction

[0039] 1. Raw material preparation

[0040] The main raw material for the production of tea polyphenols is eagle tea. The quality of the raw materials is strictly controlled from the three aspects of sensory indicators, physical and chemical indicators and hygiene indicators, especially the pesticide residues and heavy metal content in the hygiene indicators. One of the indicators is not When qualified, it cannot be used as raw material for production. When purchasing raw materials, focus on controlling:

[0041] 1) Sensory indicators: normal color and fragrance; no mildew

[0042] 2) Physical and chemical indicators: tea polyphenol content ≥ 16%; total catechin ≥ 10%; water content ≤ 8%

[0043] 3) Hygienic indicators: pesticide residues ≤ 10mg / kg; heavy metals ≤ 20mg / kg

[0044] 2. Water extraction and coarse filtration

[0045] Take leopard skin camphor leaves (also known as eagle tea) as raw materials, chop them up, weigh 10kg, add 80L of pure water, heat to 75-85°C, s...

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Abstract

The present invention discloses a method for extracting tea-polyphenol from Laoying tea. Its extraction method includes the following steps: selecting raw material Laoying tea, utilizing hot water to make extraction, coarse filtering, centrifugal separation, ultra-filtration, utilizing macroporous resin to make adsorption, elution, nano-filtration, recovering solvent and freeze-drying so as to obtain the tea-polyphenol finished product.

Description

technical field [0001] The invention belongs to a method for extracting effective components in plants, in particular to a method for extracting tea polyphenols from eagle tea. Background technique [0002] Leopard skin camphor belongs to the genus Leopard skin camphor. Its leaves are called eagle tea, commonly known as white tea. It is mainly distributed in Sichuan, Guizhou, Anhui, Henan, Zhejiang, Guangdong, Yunnan and other places. It often grows at an altitude of about 1000 meters. In the low mountain evergreen broad-leaved forest, under natural growth conditions, new buds germinate twice a year, spring buds from April to May, and autumn buds from August to September. A health tea for long-term drinking. Under suitable conditions, it can also be cultivated artificially by asexual reproduction. Folk drinking shows that it has medicinal effects such as detoxifying and reducing swelling, improving eyesight and benefiting thinking, promoting body fluid to quench thirst, di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23F3/18
Inventor 舒阿庆
Owner 舒阿庆
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