RESUMO
Objective To investigate the effect of XuanHuSuoSan and its disassembled prescriptions on dissolution of psoralen and isopsoralen. Methods The dissolution of psoralen and isopsoralen in XuanHuSuoSan and its disassembled prescriptions were determined by HPLC, using ES Industries Epic Polar C18 column (250 mm×4.6 mm, 5 μm) with methanol and water (55: 45) as mobile phase at 25 °C with a flow rate of 1.0 ml/min and detection wavelength of 246 nm. Results The dissolution of psoralen and isopsoralen had great changes among XuanHuSuoSan and its disassembled prescriptions, and the analysis of variance and SNK showed that there were significant differences among XuanHuSuoSan and its disassembled prescriptions (P < 0.05). Conclusion Radix Angelicae Sinensis and Radix Achyranthis Bidentatae are helpful to the dissolution of psoralen and isopsoralen from Fructus Psoraleae, while Rhizoma Corydalis can inhibit the dissolution of psoralen and isopsoralen.