Quality standard for Biling Weitong Granules / 中成药

ABSTRACT

AIM:To establish the quality standard of Biling Weitong Granules (Rhizoma Corydalis, Radix et Rhizoma Rhei, Rhizoma Coptidis, etc.). METHODS: Rhizoma Corydalis, Radix et Rhizoma Rhei, Rhizoma Coptidis, Fructus Evodiae, Fructus Litseae were identified by TLC. The content of berberine hydrochloride was determined by RP-HPLC C_ 18 column(ODS, 250 mm?4.6 mm, 5 ?m) was used as chromatographic column. The acetonitrile-0.02 mol/L potassium dihydrogen phosphate (Adjust with phosphoric acid to a pH of 3.0) (25∶75) was used as mobile phase. The detection wavelength was at 347 nm. The flow rate was kept to 1.0 mL/min. RESULTS: The TLC sports developed were fairly clear, and the blank test showed no interference. The linearity of berberine hydrochloride was good in the range of 0.041 32-0.619 8 ?g(r= 0.999 9 ). The average recovery of berberine hydrochloride was 101.93%, RSD=0.60%(n=6). CONCLUSION: The method is simple, reliable, accurate and can be applied as the quantity control method of Biling Weitong Granules.