ABSTRACT
OBJECTIVE:To establish a method for the simultaneous determination of chlorogenic acid,evodiamine,rutecar-pine in different places of Evodia rutaecarpa. METHODS:UPLC was performed on the column of ACQUITY UPLC BEH C18 with mobile phase of acetonitrile-0.1% Phosphoric acid aqueous solution(gradient elution)at a flow rate of 0.40 ml/min,the detection wavelength was 326 nm and 220 nm,column temperature was 30 ℃,and the volume injection was 2 μl. RESULTS:The linear range was 7.67-76.67 μg/ml for chlorogenic acid(r=0.999 2),13.33-133.33 μg/ml for evodiamine(r=0.999 7)and 13.33-133.33μg/ml for rutecarpine(r=0.999 8);the limits of quantitation were 0.11 ng,0.05 ng and 0.05 ng,the limits of detection were 0.03 ng,0.01 ng and 0.01 ng,respectively;RSDs of precision,stability and reproducibility tests were lower than 3%;recoveries were 96.19%-101.90%(RSD=2.19%,n=6),95.35%-101.16%(RSD=2.27%,n=6)and 95.92%-98.98%(RSD=1.33%,n=6),re-spectively. CONCLUSIONS:The method is rapid and accurate,and suitable for the simultaneous determination of chlorogenic ac-id,evodiamine,rutecarpine in different places of E. rutaecarpa.
ABSTRACT
OBJECTIVE:To investigate penetrative effects of a penetration enhancer and multiple penetration enhancers combi-nation with different proportions on Euodia rutaecarpa superfines cataplasm,so as to optimize enhancer and their concentrations. METHODS:Modified Franz diffusion cell was employed with isolated mice abdominal skin as barrier. HPLC method was adopted to detect the effects of a penetration enhancer (propanediol, azone, oleic acid), multiple penetration enhancers (propanedi-ol-azone,propanediol-oleic acid,propanediol-azone-oleic acid),their proportion and amount on accumulative permeation quantity (Qn) of evodiamine and rutaecarpin in Euodia rutaecarpa superfines cataplasm. RESULTS:The penetrative effect of a penetration enhancer propanediol was significantly better than that of other one penetration enhancers and multiple penetration enhancers;the higher proportion of propanediol in multiple penetration enhancer system was,the better penetrative effects of evodiamine and rutae-carpin had. Using 3%,5 % and 7 % propanediol as enhancer,Q36 h of evodiamine were 11.290,14.332 and 13.537 μg/cm2,and those of rutaecarpin were 11.965,14.856 and 13.901 μg/cm2. CONCLUSIONS:The penetrative effect of 5% propanediol is the best,and can be used as enhancer for E. rutaecarpa superfines cataplasm.
