Title:
METHOD FOR EFFICIENT EXTRACTION OF PLANT ANTHOCYANIDIN
Document Type and Number:
WIPO Patent Application WO/2020/078293
Kind Code:
A1
Abstract:
The present invention relates to the technical field of bioengineering and provides a method for efficient extraction of plant anthocyanidin. The method comprises steps of: hydrolyzing anthocyanin; using one of sodium bicarbonate or potassium bicarbonate NaHCO3/KHCO3 to neutralize an aqueous solution obtained after the anthocyanin hydrolysis to pH 7; using a saturated aqueous solution of sodium chloride or potassium chloride NaCl/KCl to perform salting out for suspended separation of a conjugate of an anthocyanidin sodium salt or potassium salt and a fatty acid or fatty acid ester; allowing aqueous hydrochloric acid to react with the anthocyanidin sodium salt or potassium salt; and filtering and separating an anthocyanidin aqueous solution. The present invention is applied to the extraction of natural plant anthocyanidin.
Inventors:
GENG ZHAOXIANG (CN)
Application Number:
PCT/CN2019/110906
Publication Date:
April 23, 2020
Filing Date:
October 12, 2019
Export Citation:
Assignee:
GENG ZHAOXIANG (CN)
International Classes:
C07D311/62; C12P17/06
Domestic Patent References:
| WO2015127118A1 | 2015-08-27 |
Foreign References:
| CN108864027A | 2018-11-23 | |||
| CN103834702A | 2014-06-04 | |||
| CN107721966A | 2018-02-23 | |||
| CN103145681A | 2013-06-12 | |||
| CN106674184A | 2017-05-17 | |||
| US20070269536A1 | 2007-11-22 |
Attorney, Agent or Firm:
SHANGHAI SHENXIN LAW FIRM (CN)
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