Study on HPLC method to determine contents of Schisandrin A and Schisandrin B in Schisandra chinensis extraction

The determination method of Schisandrin A and Schisandrin B in Schisandra chinensis was improved with the high performance liquid chromagraphy (HPLC). The sample was extracted exceedingly in the critical limit of CO2. The retention time of Schisandrin A and Schisandrin B was reduced, with methano/water (75: 25) as mobile phase. The wavelength for detection was 254 nm.The R2 of standard curve was 0.9998 and the relative standard deviation was 2.31% and 3.17% with the recovery of 96.45% and 97.37%, respectively. The result shows that the rate of veracity of this method is higher and it proves that the determination method of Schisandrin A and Schisandrin B in Schisandra chinensis is a feasible method.