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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.:

US 9765062 B1

PDFFull Text
Date of Patent:
Sep. 19, 2017

Filed:

Dec. 30, 2013

Method for producing silymarin

Applicant:

Chenguang Biotech Group Co.,ltd., Quzhou County, CN;

Inventors:

Qingguo Lu, Quzhou County, CN;

Yunhe Lian, Quzhou County, CN;

Hong Tian, Quzhou County, CN;

Xinying Cheng, Quzhou County, CN;

Zhipeng Duan, Quzhou County, CN;

Assignee:

Chenguang Biotech Group Co., Ltd., Quzhou County, Hebei, CN;

Attorney:

Blakely, Sokoloff, Taylor & Zafman LLP

Primary Examiner:

D M Seaman

Int. Cl.
CPC ...
C07D 407/04 (2006.01);
U.S. Cl.
CPC ...
C07D 407/04 (2013.01);
Abstract

The present invention relates to a method for producing silymarin. The method comprises: pressing silybum marianum seeds to obtain silymarin powder, and soaking the silymarin powder by using alkaline water; extracting, by using acetone, the silymarin powder soaked by using alkaline water, and performing filtering and concentration on the extracted liquid to obtain a concentrated solution; and performing extraction on the concentrated solution by using a non-polar solvent, performing separation to obtain a non-polar solvent layer and an acetone layer, and concentrating and drying the acetone layer to obtain silymarin. The method can greatly improve the extraction efficiency and the yield, shorten the extraction time, needs simple processes and low cost and thoroughly remove residual oil, so that the product has a low impurity, high product quality and a high purity; and the method is applicable to industrial production and has a great application prospect and economic value.

Find Patent Forward Citations

Lu, Qingguo. (2017). Method for producing silymarin (U.S. Patent No. 9765062). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9765062

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