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  • Title: Determination of gentiopicroside, mangiferin, palmatine, berberine, baicalin, wogonin and glycyrrhizin in the traditional Chinese medicinal preparation sann-joong-kuey-jian-tang by high-performance liquid chromatography.
    Author: Lin SJ, Tseng HH, Wen KC, Suen TT.
    Journal: J Chromatogr A; 1996 Apr 12; 730(1-2):17-23. PubMed ID: 8680588.
    Abstract:
    High-performance liquid chromatography was employed to determine the contents of several marker substances such as gentiopicroside, mangiferin, palmatine, berberine, baicalin, wogonin and glycyrrhizin in Sann-Joong-Kuey-Jian-Tang. The separation was performed on a Cosmosil 5C18-AR column by gradient elution with 0.03% (v/v) phosphoric acid-acetonitrile (0 min, 90:10; 10 min, 87:13; 17-27 min, 77:23; 40 min, 62:38; 50 min, 55:45) as the mobile phase at a flow-rate of 1.0 ml/min, with detection at 254 nm. n-Propylparaben was used as the internal standard and seven regression equations revealed linear relationships between the peak-area ratios (marker substances/internal standard) and concentrations. The repeatability and reproducibility (relative standard deviation) of the method were in the ranges 0.02-1.78% and 1.44-4.95%, respectively.
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