Ochratoxin a determination in beer by solid-phase microextraction coupled to liquid chromatography with fluorescence detection: a fast and sensitive method for assessment of noncompliance to legal limits

Journal of Agricultural and Food Chemistry
Antonella ArestaCarlo G Zambonin

Abstract

A solid-phase microextraction-liquid chromatography-fluorescence detection (SPME-LC-FD) method for the determination of ochratoxin A (OTA) in commercial beer samples was developed for the first time using a 60 microm thick poly(dimethylsiloxane)/divinylbenzene (PDMS/DVB) fiber. The procedure required a very simple sample pretreatment, an isocratic elution, and provides a selective extraction. All of the factors influencing fiber adsorption (extraction time, temperature, pH, and salt addition) and desorption of the analyte (desorption and injection time and desorption solvent mixture composition) have been investigated. The linear range investigated in beer was 0.03-2 ng/mL; within-day and between-days relative standard deviation in beer were 4.3 and 5.9%, respectively. The limit of quantification in spiked beer was 53 pg mL(-)(1), well below all European regulatory levels.

References

Jul 13, 2000·Journal of Chromatography. a·H KataokaJ Pawliszyn
Jan 10, 2003·Analytical and Bioanalytical Chemistry·Carlo G Zambonin

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Citations

Nov 24, 2007·Analytical and Bioanalytical Chemistry·I Y GoryachevaS De Saeger
Nov 10, 2007·Journal of Chromatography. a·Yi ChenChanggui Qiu
May 29, 2007·Journal of Pharmaceutical and Biomedical Analysis·Rosa VatinnoFrancesco Palmisano
Dec 21, 2006·Journal of Chromatography. a·Heather L Lord
Sep 1, 2007·Journal of Separation Science·Sandra Rellán, Ana Gago-Martínez
Aug 14, 2012·Analytica Chimica Acta·Yong Chen, Leonard M Sidisky
Mar 27, 2019·Food Additives & Contaminants. Part B, Surveillance·Liliana J G SilvaAngelina Pena

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