Invention Grant
- Patent Title: High-purity rebaudioside A and method of extracting same
- Patent Title (中): 高纯度莱鲍迪苷A及其提取方法
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Application No.: US11958351Application Date: 2007-12-17
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Publication No.: US07923541B2Publication Date: 2011-04-12
- Inventor: Mingfu Yang , Jun Hua , Ling Qin
- Applicant: Mingfu Yang , Jun Hua , Ling Qin
- Applicant Address: CN Chengdu
- Assignee: Chengdu Wagott Pharmaceutical Co., Ltd.
- Current Assignee: Chengdu Wagott Pharmaceutical Co., Ltd.
- Current Assignee Address: CN Chengdu
- Agency: Christie, Parker & Hale, LLP
- Priority: CN200610022507 20061215
- Main IPC: C07H15/256
- IPC: C07H15/256

Abstract:
A process for recovering Rebaudioside A from Stevia rebaudiana Bertoni plants is provided and includes the steps of sequentially extracting plant material with a first solvent to obtain a first extract, filtering the first extract and passing the first extract through a polar resin to obtain a filtrate, and purifying the filtrate to obtain a crystalline-containing material. With further purification, a product containing over 99% Rebaudioside A is obtained. The present invention is also directed toward a method of purifying stevia glycosides to obtain purified Rebaudioside A. In one embodiment, the method includes silica gel column chromatography using an solvent comprising ethyl acetate and ethanol.
Public/Granted literature
- US20080300402A1 HIGH-PURITY REBAUDIOSIDE A AND METHOD OF EXTRACTING SAME Public/Granted day:2008-12-04
Information query
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