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Reference type: Journal
Authors: Cao JL, Kong WJ, Zhou SJ, Yin LH, Wan L, Yang MH
Article Title: Molecularly imprinted polymer-based solid phase clean-up for analysis of ochratoxin A in beer, red wine, and grape juice.
Publication date: 2013
Journal: Journal of Separation Science
Volume: 36
Issue: (7)
Page numbers: 1291-1297.
DOI: 10.1002/jssc.201201055

Abstract: A simple, reliable, and low-cost method based on molecularly imprinted polymer as a selective sorbent of SPE was proposed for the determination of ochratoxin A (OTA) in beer, red wine, and grape juice by HPLC coupled with fluorescence detection (HPLC-FLD). Samples were diluted with water and cleaned up with an AFFINIMIP- SPE OTA column. After washing and eluting, the analyte was analyzed by HPLC-FLD. Under the optimized conditions, LOD and LOQ for OTA were 0.025 and 0.08 ng/mL, respectively. The recoveries of OTA from beer, red wine, and grape spiked at 0.1, 2, and 5 ng/mL ranged from 91.6 to 101.7%. Furthermore, after a simple regenerated procedure, the molecularly imprinted polymer based SPE column could be reused at least 14 times to achieve more than 80% recoveries of OTA in real samples. The developed method was applied to the detection of 30 beer, red wine, and grape juice samples and only four samples were contaminated by OTA with levels below the legal limits
Template and target information: ochratoxin A, OTA
Author keywords: beer, molecularly imprinted polymer, ochratoxin A, SPE

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