Determination of Content of Protocachuic Acid in Yanlixiao Capsules
炎立消胶囊中原儿茶酸的含量测定研究

Objective To determine the content of protocachuic acid in Yanglixiao capsules (made of clove leaves).Method HPLC method is used with chromatographic column Krmasil C18(4.6×200mm,5um),acetonitrile-water(15:85V/V)of mobile phase,1.0mL.min of flow velocity and 260nm of detection wavelength. Result There would be a linear relationship when the application of protocachuic acid ranges within 0.06-0.18ug and in this case the average recovery of this acid can reach 99.8% with 1.2% of RSD .Conclusion This method is simple and convenient to application and therefore it can be used to determine the content of protocachuic acid in Yanlixiao capsules.