Extraction Technology of Gentong Mixture of Puerarin

OBJECTIVE To optimize the water flow extraction conditions of puerarin in Gentong mixture. METHODS The extraction content of puerarin( the effective components of Radix) and the yield of dry extract were used as the indexes. The high performance liquid chromatography method was used for determination of the content of puerarin,and the orthogonal experiment was adopted to optimize the extraction condition.RESULTS Optimized process was adding 6 times water,soaking 0.2 h,extracting for 2times,and each time for 2 h.CONCLUSION Puerarin content is higher by the optimum process; the yield of dry extract is higher and comprehensive score is higher. The process is stable and feasible.