The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 09, 2023
Filed:
Jun. 14, 2021
Ziheng Jin, Luohe, CN;
Sujing Gu, Luohe, CN;
Yanjun Wen, Luohe, CN;
Linzheng LI, Luohe, CN;
Abstract
A method for preparing aThunb extract rich in dihydromyricetin includes the following steps: (1) crushingThunb seeds to obtain aThunb powder; (2) adding a 10-95% ethanol solution in an amount of 3-15 times of an amount of theThunb powder, stirring and extracting at 20° C.-80° C. twice; (3) filtering to obtain an extract solution; (4) concentrating the extract solution by evaporating ethanol under reduced pressure to obtain a crude extract, the crude extract having a solid content of 10%-40%; (5) placing the crude extract at −20° C. to 8° C. for 0.5 to 12 hours; (6) centrifuging the crude extract to obtain a supernatant; and (7) spray-drying the supernatant to obtain theThunb extract.