Determination of Puerarin Content in Jingning Capsule by HPLC / 中国中医药信息杂志

Objective To establish a method for determination of puerarin content in Jingning capsule. Methods The column was Kromasil (250 mm?4. 6 mm, 5 ?m). The mobile phase consisted of methanol- 0.2% water H3PO4 (20/80), with flow rate of 1 mL/min and the UV detective wavelength set at 250 nm. Results Puerarin showed a good linear at the range of 6.268～125.360 ?g/mL (r=0.999 8). The average recovery was 101.42%, with RSD of 1.22%. Conclusion This method is accurate, simple, repeatable and suitable for the determination of puerarin content in Jingning capsule.