Method for extracting theaflavin

An extraction method and theaflavin technology, applied in the direction of organic chemistry, can solve the problem that chemical reagents cannot be recycled, and achieve the effects of low cost, high product yield and high content

Inactive Publication Date: 2005-11-23
海南群力药业有限公司
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Problems solved by technology

The chemical reagent oxidation method is to convert tea polyphenols with chemical reagents by controlling the re

Method used

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  • Method for extracting theaflavin

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Embodiment Construction

[0007] The present invention will be further described in detail below.

[0008] The extraction method of theaflavins designed in the present invention includes a fermentation process and a preparation process.

[0009] 1) During the fermentation process, the fresh tea leaves are kneaded and then refined with water, the ratio of material to water is 1:1-20, and then put into the fermentation tank, and the temperature is 30-40°C, and the pH value is 5-6. Air or oxygen, stirring, and natural fermentation for 20-60 minutes to obtain theaflavin solution. In order to improve the utilization rate of fresh tea leaves, water extract of dry tea leaves or tea polyphenols can be added for mixed fermentation, and then the theaflavin solution The slag is removed by centrifugation, the tea slag is fermented and dried by microorganisms to obtain an organic fertilizer, and the centrifugal liquid is subjected to ultrafiltration through a ceramic membrane to obtain a filtrate; the membrane pore...

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Abstract

The invention discloses a process for extracting theaflavine, which comprises kneading fresh tea leaves, watering and grinding plasm, then carrying out fermentation and oxidation so as to obtain solution containing theaflavine, obtaining centrifugate through centrifugation deslagging, ultrafiltrating the centrifugate with ceramic film, finally processing the obtained filtrate through solvent extraction or membrane separating process.

Description

technical field [0001] The invention relates to a method for extracting theaflavins from tea leaves. Background technique [0002] Theaflavin is composed of four monomer components: theaflavin, theaflavin-3-gallate, theaflavin-3'-gallate and theaflavin-3.3'-gallate. Antioxidant, antibacterial, deodorizing, scavenging free radicals, anti-aging, treating cardiovascular diseases and other functions, are widely used in various fields such as medicines, health products, food additives, etc. At present, the methods of extracting theaflavins mainly include solvent extraction and separation method, chemical reagent oxidation method, polyphenol oxidase method. The solvent extraction separation method mainly uses ethanol for alcohol analysis and separation, and the content of theaflavins obtained is low, which is not suitable for the application of medicines and health products. The chemical reagent oxidation method is to convert tea polyphenols with chemical re...

Claims

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Application Information

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IPC IPC(8): C07D311/62
Inventor 章志强邢平王秋光林开毫张威
Owner 海南群力药业有限公司
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