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Reference type: Journal
Authors: Bi W, Tian M, Row KH
Article Title: Separation of phenolic acids from natural plant extracts using molecularly imprinted anion-exchange polymer confined ionic liquids.
Publication date: 2012
Journal: Journal of Chromatography A
Volume: 1232
Issue: (1)
Page numbers: 37-42.
DOI: 10.1016/j.chroma.2011.08.054
Alternative URL: http://www.sciencedirect.com/science/article/pii/S0021967311012416

Abstract: Polymer-confined ionic liquids were used for the separation of phenolic acids from natural plant extract by utilizing an anion-exchange mechanism. They were synthesized using molecular imprinting technique to reduce non-directional ionGă˘ion interactions during anion-exchange and other interactions with interference substances that could decrease selectivity. A suitable sorbent for phenolic acid separation could be identified based on the adsorption behaviors of phenolic acids on different polymer-confined ionic liquids. Thus, the developed ionic liquid-based molecularly imprinted anion-exchange polymer (IMAP) achieved high recovery rates by solid-phase extraction of phenolic acids from Salicornia herbacea L. extract: 90.1% for protocatechuic acid, 95.5% for ferulic acid and 96.6% for caffeic acid. Moreover, the phenolic acids were separable from each other by repeated solid phase extraction cycles. The proposed method could be used to separate other phenolic acids or organic acids from complex samples
Template and target information: phenolic acids, protocatechuic acid, PA, caffeic acid, CA, Ferulic acid, FA
Author keywords: Ionic liquid, Anion exchange, molecularly imprinted polymer, solid phase extraction, Phenolic acid


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