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Reference type: Journal
Authors: Long CY, Mai ZB, Yang YF, Zhu BH, Xu XM, Lu L, Zou XY
Article Title: Synthesis and characterization of a novel molecularly imprinted polymer for simultaneous extraction and determination of water-soluble and fat-soluble synthetic colorants in chilli products by solid phase extraction and high performance liquid chromatography.
Publication date: 2009
Journal: Journal of Chromatography A
Volume: 1216
Issue: (47)
Page numbers: 8379-8385.
DOI: 10.1016/j.chroma.2009.09.064
Alternative URL: http://www.sciencedirect.com/science/article/B6TG8-4XC57JF-1/2/9503ad7e0b9e5e654891765c906bcf0a

Abstract: A sorbent was synthesized and investigated for molecularly imprinted solid phase extraction (MISPE). Molecularly imprinted polymers (MIP) were synthesized via precipitation polymerization procedure, where 4-vinyl pyridine (4-VP) was used as functional monomer and ethylene glycol dimethacrylate (EDMA) as cross-linking agent. The imprinting effect of the MISPE was evaluated by elution experiments. The resulting MISPE showed high extraction selectivity to water-soluble and fat-soluble synthetic colorants. The determination of multi-residue for three kinds of water-soluble and six kinds of fat-soluble synthetic colorants in chilli products was also investigated by HPLC coupled with MISPE. The mean recoveries calculated by solvent calibration curve for water-soluble and fat-soluble synthetic colorants were from 72.1% to 95.6% for chilli spice and 72.1% to 92.3% for chilli powder. The decision limit (CCα) and the detection capability (CCβ) obtained for water-soluble and fat-soluble synthetic colorants were in the range of 1.2-1.6 and 1.9-2.4μgkg-1 in chilli spice and chilli powder. The resulting MISPE was successfully used off-line for the determination of nine kinds of synthetic colorants in chilli products
Template and target information: Fancy red, Para red, Sudan red G, Sudan I, Sudan II, Sudan III, Sudan IV
Author keywords: Synthetic colorants, Molecularly imprinted polymers, Multi-residue extraction, Chilli product


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