Abstract: To separate and enrich EGCG from a mixture of tea catechins, the molecular imprinted polymers (MIPs) were synthesized on silica gel by surface molecular imprinting technique and characterized with Fourier transform infrared spectroscopy (FT-IR), elemental analysis and scanning electronic microscopy (SEM). MIPs exhibited favorable recognition, better selectivity for EGCG than the other monomers, and the descending order was EGCG, (+)-catechin (C), (-)-epicatechin (EC), (-)-epigallocatechin (EGC), (-)-catechin gallate (CG) and (-)-gallocatechin gallate (GCG). These results demonstrated that MIPs could realize the separation and enrichment of EGCG in real sample
Template and target information: EGCG, epigallocatechin gallate
Author keywords: EGCG, molecular imprinting, Solid-phase extraction, Separation and enrichment, selectivity