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Reference type: Journal
Authors: Ji WH, Wang RY, Mu Y, Wang X
Article Title: Superhydrophilic molecularly imprinted polymers based on a single cross-linking monomer for the recognition of iridoid glycosides in Di-huang pills.
Publication date: 2018
Journal: Analytical and Bioanalytical Chemistry
Volume: 410
Issue: (25)
Page numbers: 6539-6548.
DOI: 10.1007/s00216-018-1257-6

Abstract: An efficient analytical method based on molecularly imprinted solid-phase extraction (MISPE) coupled with high-performance liquid chromatography-diode array detection (HPLC-DAD) was established for the determination of iridoid glycosides (IGs) in Di-huang pills. As the solid-phase extraction medium, superhydrophilic molecularly imprinted polymers (MIPs) with high affinity and selectivity to IGs in water media were fabricated using divinyl galactose as a single cross-linking monomer. The structure, porosity, and hydrophilicity of MIPs were characterized. The properties involving dynamic adsorption, kinetic adsorption, and selectivity were evaluated. Under optimal conditions the MISPE-HPLC-DAD based method was applied for loganin, morroniside, cornin, and sweroside determination in three kinds of Di-huang pills. The limits of detection of four IGs were 0.002-0.003 mg g-1. Furthermore, the proposed method exhibited some merits including good linearity, excellent precision, and desirable accuracy. The established MISPE-HPLC-DAD method has great potential for the selective determination of IGs in Chinese patent drugs
Template and target information: iridoid glycosides, IGs, loganin, morroniside, cornin, sweroside
Author keywords: Superhydrophilic molecularly imprinted polymers, Single cross-linking monomer, Solid-phase extraction, Iridoid glycosides, Di-huang pills

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