[Multi-component quantitation of artificial cow-bezoar and study on its markers of quality difference].

An HPLC-ELSD method for quantitation of GCANa, CA, HDCA, CDCA and DCA in artificial cow-bezoar was developed in this study. The chromatographic separation was performed using a Wondasil CC₁₈(4.6 mmχ250 mm，5 μm) column at a column temperature of 25 °C and liquid flow-rate of 1.0 mL·min⁻¹. Acetonitrile and 0.2% formic acid solution were used as mobile phase with a linear gradient and injection volume was 10 μL. An ELSD was used with a nitrogen flow-rate of 2.3 L·h⁻¹at a drift tube temperature of 110 °C. Some chemometric methods were applied in data procession and analysis for exploration of the markers of quality difference. The accurate and simple method is suitable for the quality evaluation and the quality control of artificial cow-bezoar.