A pre-treatment methodology based on the MISPE procedure was developed for the determination of PS, BSM, TBM, MSM and NS in rice grain samples using reversed-phase HPLC analysis.
The average recovery of template PS was 95.6% in the rice grain samples following MISPE, and it was much higher than the recoveries of the other four SUHs, indicating that the MIP recognised the template more effectively than the other four structures.