| 초록 |
Two facile deep eutectic solvents grafted magnetic chitosan (CTS) coated molecular imprinted polymers (Fe3O4-CTS@DES-MIPs) were synthesized for the selective recognition and separation of (+)-catechin, (-)-epicatechin, and (-)-epigallocatechin gallate from black tea with magnetic solid-phase extraction, and the new-type DESs were adopted as the functional monomer. The two obtained Fe3O4-CTS@DES-MIPs were characterized with fourier transform infrared spectrometry and field emission scanning electron microscope. The selective recognition ability was investigated by adsorption experiments. The actual extracted amounts of (+)-catechin, (-)-epicatechin, and (-)-epigallocatechin gallate concentrations in black tea using the Fe3O4-CTS@DES-MIPs with the MSPE method were 13.10 mg•g-1, 6.32 mg•g-1, and 8.76 mg•g-1, respectively. The Fe3O4-CTS@DES-MIPs presented outstanding recognition and selectivity, so that it can be utilized to separate bioactive compounds from black tea. |
