Title:
INDUSTRIAL PRODUCTION METHOD FOR EXTRACTING TEA POLYPHENOLS FROM GREEN TEA
Document Type and Number:
WIPO Patent Application WO/2021/042754
Kind Code:
A1
Abstract:
The present application discloses an industrial production method for extracting tea polyphenols from green tea. The industrial production method comprises the following steps: infusing green tea with 60% ethanol under heating and reflux, and filtering the infusion to obtain an extract; concentrating the extract under reduced pressure to obtain an extract concentrate; loading the extract concentrate onto a macroporous adsorption resin chromatography column, eluting with water, 20% ethanol and 75% ethanol sequentially, and collecting the eluate from the 20% ethanol elution and the eluate from the 75% ethanol elution respectively; concentrating the eluate from the 75% ethanol elution under reduced pressure to obtain a concentrated aqueous solution of green tea extract; and filtering the aqueous solution of green tea extract, and drying the resulting filtrate to obtain polyphenols from the green tea extract. The extraction method of the present application has the advantages of improving tea polyphenol extraction efficiency and reducing production cost, and is suitable for industrial production.
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Inventors:
SONG KUNYUAN (CN)
Application Number:
PCT/CN2020/089149
Publication Date:
March 11, 2021
Filing Date:
May 08, 2020
Export Citation:
Assignee:
SONG KUNYUAN (CN)
SHANGHAI YIN SHENG CONSULTING CORPORATION LTD LIABILITY PARTNERSHIP (CN)
SHANGHAI YIN SHENG CONSULTING CORPORATION LTD LIABILITY PARTNERSHIP (CN)
International Classes:
C07G99/00
Foreign References:
| CN101643483A | 2010-02-10 | |||
| CN1785990A | 2006-06-14 | |||
| CN110483592A | 2019-11-22 |
Attorney, Agent or Firm:
SHANGHAI HONSIN INTELLECTUAL PROPERTY OFFICE (CN)
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