Simultaneous Determination of Seven Alkaloids in Fufang Zhenzhu Tiaozhi Capsule by HPLC Coupled with DAD

Objective To establish a reverse-phase liquid chromatography method for the determination of seven alkaloids (magnoflorine, columbamine, jatrorrhizine, epiberberine, coptisine, palmatine, and berberine) in Fufang Zhenzhu Tiaozhi Capsule. Methods Chromatography was performed on a Dionex Acclaim C 18 column (250 mm × 4.6 mm, 5.0 μm) at 30 ℃ .The mobile phase was composed of acetonitrile-potassium dihydrogen phosphate solution (0.015 mol/L, 40:60, including 1.7 g/L sodium dodecyl sulfate and phosphoric acid used to regulate pH value to 3.0), with a flow rate of 1.0 mL/min. The detection wavelength was 270 nm. Results The calibration curves of magnoflorine, columbamine, jatrorrhizine, epiberberine, coptisine, palmatine, and berberine were linear in the range of 1.07- 10.65, 0.78-7.55, 0.75-7.50, 1.60-15.95, 2.69-26.85, 2.31-23.10, and 6.04-60.40 mg/mL. The average recoveries of magnoflorine, columbamine, jatrorrhizine, epiberberine, coptisine, palmatine, and berberine were 101.0%, 101.2%, 100.1%, 100.0%, 100.1%, 101.1%, and 99.7%, respectively. Conclusion The method could be used for the quantitative determination of the preparation.