Abstract:

Naringin in grapefruit peel was determined by matrix solidphase dispersion extraction coupled with capillary electrophoresis detection. The diatomaceous earth was used as dispersion adsorbant, methanol was used as elution solvent, and capillary electrophoresis was applied to separation and detection of the analyte. The experimental parameters for the extraction, including the type and amount of dispersion adsorbant, the type and amount of elution solvent, and the mass ratio of diatomaceous earth to sample were examined and optimized. The proposed method was applied to the analysis of the sample and the recovery of the analyte was 79.2% and the detection limit was 1.5 μg/mL. The method was simple, the amount of solvent was small, and analytical time was short.

Key words: capillary electrophoresis, matrix solidphase dispersion, naringin, grapefruit peel