Abstract: A reliable method of magnetic molecularly imprinted polymers/dispersive solid-phase extraction (MMIPs-DSPE) was established for determination of polydatin (PD) and resveratrol (RSV) in Chinese medicine Danning TabletsŪ coupled with HPLC-DAD. This method was effectively used for the specific recognition and selective enrichment of target compounds and removal of matrix interferences in Chinese medicine. PD-MMIPs were obtained with PD as a template, methylacrylic acid (MAA) as a functional monomer, ethylene glycol dimethacrylate (EGDMA) as a crosslinking agent and azobisisobutyronitrile (AIBN) as an initiator. Good linearity was observed in the range of 0.01-10 μg mL-1, with the limit of detection of 2.5 ng mL-1 and 3.5 ng mL-1 for PD and RSV, respectively. The levels of PD and RSV in Danning Tablets[registered sign] were found to be 769.94 μg g-1 and 130.03 μg g-1, and sample recoveries were between 91.79% and 102.23% with RSD < 6%
Template and target information: polydatin, PD, resveratrol, RSV