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Determination of oxymatrine in Sophora Radix by High Performance Liquid Chromatography  

Yang, Seung Kwon (Department of chemistry, Soongsil university)
Yun, Young Ja (Department of chemistry, Soongsil university)
Namgung, Mi Ok (Department of chemistry, Soongsil university)
Publication Information
Analytical Science and Technology / v.17, no.4, 2004 , pp. 289-294 More about this Journal
Abstract
A high performance liquid chromatographic method was designed for the quantitative analysis of oxymatrine in Sophora Radix. The separation of oxymatrine was performed by reversed-phase chromatography with a $C_{18}$ column and a buffered aqueous solution containing acetonitrile, and monitored by UV absorption at 215 nm. Extraction of oxymatrine in Sophora Radix was carried out using various solvents and extraction methods. The optimum extraction efficiency for the crushed Sophora Radix was achieved by reflux at $80^{\circ}C$ in 50% ethanol for five hours. Most extraction methods used to complicate pretreatments. In this study, sublimation was employed for a extraction method without going through complicate pretreatments. Sublimation was carried out under high vacuum ($1{\times}10^{-3}$ torr) and at high temperature ($200^{\circ}C$). Extraction efficiency using Sublimation was found to be inferior to other extraction methods.
Keywords
Oxymatrine; HPLC; Sophora radix;
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