Simultaneous determination of betulin an
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Guoling Zhao; Weidong Yan; Dan Cao
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Article
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2007
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Elsevier Science
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English
β 186 KB
A simple procedure is described for the simultaneous extraction and determination of betulin and betulinic acid in white birch bark. The extraction was checked using different solvents: dichloromethane, ethyl acetate, acetone, chloroform, methanol and 95% ethanol (aqueous solution, v/v). It was foun