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- W2000986483 abstract "ABSTRACT An effective capillary zone electrophoresis (CZE) method has been developed for the determination of picroside II, cinnamic acid, ferulic acid, and vanillic acid in Rhizoma picrorhizae for the first time. After a series of optimization experiments, 100 mM borate buffer (pH 9.5), 30 kV applied voltage and 25°C temperature were selected. The contents of the four active constituents in crude drug, extracts, and capsule preparation of Rhizoma picrorhizae were successfully determined within 12 min, with gallic acid as internal standard, and the repeatability and recovery are satisfactory. In all samples, the content of picroside II is the highest, and can be regarded as the representative compound. The contents of picroside II were also determined by high performance liquid chromatography (HPLC), showing that the results by CE and by HPLC are comparable. The technological process of extract preparation containing different amounts of picroside II was investigated by CZE." @default.
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- W2000986483 date "2002-09-01" @default.
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- W2000986483 title "ANALYSIS OF ACTIVE CONSTITUENTS IN <b> <i>RHIZOMA PICRORHIZAE</i> </b> BY CAPILLARY ZONE ELECTROPHORESIS" @default.
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- W2000986483 doi "https://doi.org/10.1081/jlc-120014379" @default.
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