Determination of five marker components and total flavonoids in Paishi Granules / 中成药

ABSTRACT

AIM To determine the contents of five marker components and total flavonoids in Paishi Granules (a medication to remove stones in the body,containing Glechomae Herba,Akebiae Caulis,Cynanchi Paniculati Radix et Rhizoma,etc.).METHODS The content determination of various components in 50％ methanol extract of Paishi Granules was accomplished by RP-HPLC.The analysis was performed on a 30 ℃ thermostatic Aglient SBC1s column (250 mm ×4.6 mm,5 μm),with the mobile phase comprising of acetonitrile-0.05％ phosphoric acid flowing at 1.0 mL/min in a gradient elution manner,and the detection wavelength was set at 240 nm.The content of total flavonoids was detected by ultraviolet spectrophotometry.RESULTS Chlorogenic acid,loganin,rutin,rosmarinic acid and ammoninm glycyrrhizinate showed good linear relationships within the ranges of 18.88-604.00,18.50-592.00,20.25-648.00,18.75-600.00 and 18.81-602.00 μg/mL,whose average recoveries were 97.9％,100.7％,103.3％,96.4％ and 102.4％ with theRSDsof1.4％,0.4％,2.7％,1.2％ and 2.3％,respectively.The contents of total flavonoids in twenty batches of samples all met pharmacopeia requirements,while those of marker components were found to be different,among which loganin displayed the most significant change,followed by rutin and ammoninm glycyrrhizinate.CONCLUSION This simple,accurate and reliable method can be used for the quality control of Paishi Granules.