RESUMO
Object To research the percutaneous absorption of ?-asarone in various solvents in vitro. Methods To measure the concentration of ?-asarone passed through rat skin in various solvents which contained borneol and azote-ketone by HPLC, count the penetration of accumulation within 24 h and steady velocity. Results 0.1% Borneol could not promote the penetration of ?-asarone; azote-ketone could decrease the penetration of ?-asarone. The penetration of accumulation within 24 h and steady velocity of ?-asarone in 20% ethanol were (352.624?87.049) ?g/cm2, (18.902?4.840) ?g/(cm2?h), respectively. Conclusion The percutaneous absorption of ?-asarone is the best when the solvents contain no promoter.
RESUMO
Objective To establish the quantitative methods of psoralen and apigenin in Radix Fici Hirtae. Methods The content of psoralen and apigenin in Radix fici Hirtae was determined by HPLC. The chromatographic conditions were as follows:YMC C18 column(250 mm? 4.60 mm,5 ? m),mobile phases of methanol-0.2 % phosphoric acid for gradient elution,flow rate being 1.0 mL? min-1,column temperature at 30 ℃,detection wavelength being 245 nm for psoralen and 338 nm for apigenin,and inject volume being 10 ? L. Results Psoralen showed a good linear relationship in the range of 0.083 6～ 1.045 0 ? g,r=0.999 9,the average recovery was 100.43 % and RSD % was 0.45 % . Apigenin showed a good linear relationship in the range of 0.065 6～ 0.820 0 ? g,r=0.999 9,the average recovery was 100.41 % and RSD % was 0.34 % . Conclusion The established methods are simple and rapid with good reproducibility,and can be used for the quality control of Radix fici hertae.