Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
INDUSTRIALIZABLE METHOD FOR LEACHING XANTHOPHYLL AND QUERCETAGETIN FROM MARIGOLD
Document Type and Number:
WIPO Patent Application WO/2021/077926
Kind Code:
A1
Abstract:
Disclosed is an industrializable method for leaching xanthophyll and quercetagetin from particles of marigold flowers. The method comprises the following steps: 1) leaching particles of marigold flowers with a solution of acetone having a volume fraction of 90-99% so as to obtain a leachate; and 2) concentrating the leachate to achieve a solid content of 60-95%, and performing extracting on the resulting concentrate using a low-polarity solvent so as to obtain a quercetagetin product and a xanthophyll product. In the present invention, use of acetone as a leaching solvent to leach particles of marigold flowers enables simultaneous leaching of xanthophyll and quercetagetin, and by carefully controlling the concentration of acetone, the yield of the two products can be increased. In addition, by controlling the degree of concentration, the two effective ingredients can be efficiently isolated, affording high yields of quercetagetin and xanthophyll with high purity.

Inventors:
LIAN YUNHE (CN)
WU DI (CN)
TIAN HONG (CN)
GAO WEI (CN)
WANG HUANHUAN (CN)
Application Number:
PCT/CN2020/114159
Publication Date:
April 29, 2021
Filing Date:
September 09, 2020
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
CHENGUANG BIOTECH GROUP CO LTD (CN)
International Classes:
C07C403/24; C07D311/30; C07D311/40
Foreign References:
CN110746331A2020-02-04
CN110776449A2020-02-11
CN110776449A2020-02-11
CN110372554A2019-10-25
CN110372554A2019-10-25
CN110003071A2019-07-12
CN110003071A2019-07-12
CN110105257A2019-08-09
CN110105257A2019-08-09
Attorney, Agent or Firm:
CN-KNOWHOW INTELLECTUAL PROPERTY AGENT LIMITED (CN)
Download PDF:
View/Download PDF      PDF Help



 
Previous Patent: INJECTION MOLDING METHOD AND DEVICE

Next Patent: DISPLAY CONTROL METHOD AND ELECTRONIC DEVICE