US 11,642,608 B2 · Method of preparing Hovenia dulcis Thunb extract rich in dihydromyricetin

Abstract

A method for preparing a Hovenia dulcis Thunb extract rich in dihydromyricetin includes the following steps: (1) crushing Hovenia dulcis Thunb seeds to obtain a Hovenia dulcis Thunb powder; (2) adding a 10-95% ethanol solution in an amount of 3-15 times of an amount of the Hovenia dulcis Thunb 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 the Hovenia dulcis Thunb extract.

Claims12

Dependent claims

A method for preparing a Hovenia dulcis Thunb extract rich in dihydromyricetin, consisting of the following steps:

(1) crushing Hovenia dulcis Thunb seeds to obtain a Hovenia dulcis Thunb powder;
(2) adding a 10-95% ethanol solution in an amount of 3-15 times of an amount of the Hovenia dulcis Thunb powder, stirring and extracting at 20° C.-80° C.;
(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 the Hovenia dulcis Thunb extract.

5 more elements

Dependencies are inferred from the claim text.

Method of preparing Hovenia dulcis Thunb extract rich in dihydromyricetin

Life of this patent

Method of preparing Hovenia dulcis Thunb extract rich in dihydromyricetin

Life of this patent

Abstract

Claims12