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Reference type: Journal
Authors: Tang WL, Du W, Guo PQ, Wu NL, Du KL, Xu CG, Luo ZM, Chang RM, Zeng AG, Jing WH, Chang C, Li J, Fu Q
Article Title: Molecularly Imprinted Solid Phase Extraction using Bismethacryloyl-β-cyclodextrin and Methacrylic Acid as Double Functional Monomers for Selective Analysis of Glycyrrhizic Acid in Aqueous Media.
Publication date: 2017
Journal: Journal of Chromatographic Science
Volume: 55
Issue: (2)
Page numbers: 166-173.
DOI: 10.1093/chromsci/bmw161
Alternative URL: https://academic.oup.com/chromsci/article-abstract/doi/10.1093/chromsci/bmw161/2527513/Molecularly-Imprinted-Solid-Phase-Extraction-using

Abstract: In this work, a new molecularly imprinted solid phase extraction protocol was developed for the selective extraction and purification of glycyrrhizic acid from liquorice roots in aqueous media. The molecularly imprinted polymers (MIPs) for glycyrrhizic acid were prepared by using bismethacryloyl-β-cyclodextrin and methacrylic acid as double functional monomers and characterized by Fourier transform infrared spectroscopy, scanning electron microscope, thermo gravimetric analysis, nitrogen adsorption and elemental analysis. In aqueous media, the adsorption properties of MIPs including adsorption kinetics, adsorption isotherms and selectivity adsorption were investigated. The characterization of imprinted polymers indicated that the prepared MIPs had good stability and many cavity structures. The results of adsorption experiments illustrated the MIPs had high adsorption capacity of glycyrrhizic acid (69.3 mg g-1) with the imprinting factor 3.77, and it took ~5 min to get adsorption equilibrium. The MIPs could be used as an solid phase extraction sorbent absorbent for enrichment and purification of glycyrrhizic acid from the crude extraction of licorice roots, and the results showed promising practical value
Template and target information: glycyrrhizic acid

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