High-Purity Calycosin-7-O--D-glucopyranoside Recovered from Radix Astragali by Extraction, Fractionation and Recrystallization

文献类型: 外文期刊

第一作者: Shi, Bo

作者: Shi, Bo;Xiao, Wei-hua;Han, Lu-jia

作者机构:

关键词: Calycosin-7-O--D-glucopyranoside;extraction;fractionation;Radix Astragalis;recrystallization;resin

期刊名称:SEPARATION SCIENCE AND TECHNOLOGY ( 影响因子:2.475; 五年影响因子:2.077 )

ISSN: 0149-6395

年卷期: 2009 年 44 卷 5 期

页码:

收录情况: SCI

摘要: Calycosin-7-O--D-glucopyranoside (CG), one major isoflavonoid in Radix Astragali with promising pharmacological effects, was separated with a low-cost process in the present study. The sequential separation and purification procedures established involved extraction with 90% (v/v) aqueous ethanol at 75C for 2h twice followed by partition with ethyl acetate, elution with water, and 40% (v/v) aqueous ethanol on a styrene-based resin column and recrystallization at 4C for 12h with methanol. These conditions resulted in recovery of 81.6% of total CG with over 97% purity.

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