Title: Preparation method of ginkgo leaf extract
Application Number: 03114825 Application Date: 2003.01.08
Publication Number: 1515581 Publication Date: 2004.07.28
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: A61K35/78,A61P9/10,B01D11/02,C07B63/00,C07D493/22,C07H17/06
Applicant(s) Name: Zhejiang Kang'enbei Pharmaceutical Co. Ltd. Address: 321100
Inventor(s) Name: Wang Ruogu, Shao Shengrong
Attorney & Agent: cheng hao
Abstract:
     The preparation method of ginkgo leaf extract includes the following steps: using aqueous ethyl alcohol or methyl alcohol or acetone to extract ginkgo leaf for several times, taking out extract and concentrating the recovering solvent, diluting concentrate by using water or purified water, cooling below 20 deg.C and settling, taking supernatant fluid and making macroporous resin adsorption, using alcoholic solution to make elution, concentrating eluent under the condition of less than 75 deg.C and drying so as to obtain the invented ginkgo leaf extract.
Time: 9
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