ABSTRACT
Objective:To establish an HPLC method for the determination of palmatine hydrochloride and berberine hydrochloride in Baishi Shuitiao Powder simultaneously. Methods:A reversed phase ion pair HPLC method was adopted. An Agilent Zorbax SB-C18 (150 mm × 4. 6 mm,5 μm)column was used, the mobile phase consisted of acetonitrile-0. 1％ phosphoric acid (50 :50) (0. 2 g do-decyl sodium sulfate added to 100 ml solution), the flow rate was 1. 0 ml·min-1, the detection wavelength was at 345 nm, the injec-tion volume was 10 μl, the column temperature was at room temperature. Results: A good linear correlation was observed within the range of 1. 11-22. 16μg·ml-1 for palmatine hydrochloride (r=0. 9996) and 2. 11-42. 24μg·ml-1 for berberine hydrochloride (r=0. 9998). The average recovery was 98. 94％ with RSD of 2. 43％ for palmatine hydrochloride and 101. 3％ with RSD of 2. 05％ for berberine hydrochloride (n=6). Conclusion:The method is rapid, simple and accurate, and can be used for the content determina-tion of palmatine hydrochloride and berberine hydrochloride in Baishi Shuitiao Powder.
ABSTRACT
Objective:To build an HPLC method for the determination of baicalin and geniposide in Ganxueguanliu Huoxue cap-sules. Methods:An Agilent Eclipse XDB-C18 (150 mm × 4. 6 mm, 5μm) column was chosen for the analysis. The mobile phase con-sisted of 0. 2% phosphoric acid (A) and methanol (B) with gradient elution. The flow rate was 1. 0 ml·min-1. The detection wave-length was set at 238 nm and the column temperature was 25℃. Results:A good linear relationship was observed within the range of 0. 418-8. 360 μg·ml-1 for baicalin (r=0. 999 9) and 0. 226-4. 524μg·ml-1 for geniposide (r=0. 999 9). The average recovery of baicalin and geniposide was 99. 79% (RSD=1. 55%, n=6) and 100. 2%(RSD=2. 05%, n=6), respectively. Conclusion: The method is rapid, convenient and specific, which can be used for the content determination of baicalin and geniposide in Ganxueguanliu Huoxue capsules.