Technique Optimization of Preparation and Quality Control of Paeonia Lactiflora Formula Granules / 中国药房

ABSTRACT

OBJECTIVE:To optimize the extraction process for the preparation of Paeonia lactiflora formula granules and establish an HPLC method for the determination of Paeoniflorin in the samples.METHODS:The optimum water extraction process was selected by the L9(34)orthogonal design and the content of Paeoniflorin in formula granules was analyzed by HPLC.The HPLC assay was performed on a crosmosil C18-MS-II(250mm? 4.6mm,5? m)column.The mobile phase was employed by using acetonitrile-0.1% phosphoric acid(14∶ 86).The detection wavelength was set at 230 nm and the system was operated at 25℃.RESULTS:The optimum extraction conditions were to reflux for 3 times with 12 fold water and each time for one hour.The extraction rate of Paeoniflorin was 85.7% and the dried extraction yield was 34.4%.The peak area had a good linearity with the concentration of Paeoniflorin and the linear range was 0.128～ 0.640? g(r=0.999 8).The average recovery was 100.76% and RSD was 1.26%.CONCLUSION:The preparation process of Paeonia lactiflora formula granules was stable and feasible.The HPLC method for quality control was accurate and suitable.