Content Determination of 10 Kinds of Active Componets in Tibetan Medicine Siwei Jianghuang Prescription and Its Decoction Technology Optim ization / 中国药房

ABSTRACT

OBJECTIVE：To e stablish the method for simultaneous determination of 10 kinds of active components in Tibetan medicine Siwei jianghuang prescription ，and to optimize its decoction technology. METHODS ：HPLC method was adopted. Using soaking time ，the amount of added water ，decoction time and decoction times as factors ，comprehensive score of the contents of 10 kinds of components and solid extracts rate as response values ，one the basis of single factor test ，Box-Behnken response surface method was used to optimize its decoction technology. RESULTS ：The linear range of gallic acid ，corilagin，magnoflorine， ellagic acid ， hydrochloric jatrorrhizine ， hydrochloride palmatine ， hydrochloride berberine ， bisdemethoxycurcumin， demethoxycurcumin and curcumin were 0.280 6-1.683 6，0.289 6-1.737 6，0.320 8-1.924 8，0.116 0-0.696 0，0.018 9-0.113 5， 0.013 3-0.079 9，0.092 3-0.553 8，0.025 5-0.153 0，0.036 1-0.216 3，0.041 0-0.245 7 µg（all r were 0.999 9），respectively. The limits of quantitation were 0.28，14.48，3.21，11.60，1.89，4.44，0.46，0.26，0.36，0.41 ng，respectively. The limits of detection were 0.11，4.14，1.24，3.32，0.58，1.33，0.13，0.09，0.14，0.12 ng，respectively. RSDs of precision ，stability and reproducibility tests were all lower than 3％. The recoveries were 92.56％-103.69％（RSDs were 0.90％-3.81％，n＝6）. The optimal decoction technology included soaking 60 min，adding 8-fold（mL/g）water，decoction for twice ，lasting for 65 min each time. In 6 validation tests ，comprehensive scores were 3.323 2-3.422 4，and the absolute value of the relative error with the predicted value （3.437 4）was less than 2％.CONCLUSIONS：Established method is simple and repeatable ，and can be used for simultaneous determination of 10 kinds of active components in Siwei jianghuang prescription. Optimized decoction technology is stable and feasible.