Abstract
A rapid estimation procedure using a high-speed liquid chromatography is described for determination of berberine in crude drugs (phellodendron cortex, coptis rhizome, and phellodendron extract). Separation can be achieved within 10 min employing a 1 m column packed with Zipax SCX, using 0.1 M NaClO4 (CH3CN-H2O 6 : 4), and 0.2M H3BO3-0.002 M NaClO4 (pH 8.5) (7 : 3) solution as an eluant in a Du Pont LC 830 liquid chromatograph. Berberine in crude drugs was extracted with citric acid-methanol solution and injected into the column. Accuracy in this method was found to be less than ±1% with the relation Y=13.806X+0.0025, where X=quantity of berberine (μg) and Y=peak height of berberine (cm), and a relative coefficient of 0.999.
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Schedule a callMore From: Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan
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