Simultaneous detection of 12 mycotoxins in cereals using RP-HPLC-PDA-FLD with PHRED and a post-column derivatization system

Soleimany, F. and Jinap, Selamat and Rahmani, Anoshep and Khatib, Alfi (2011) Simultaneous detection of 12 mycotoxins in cereals using RP-HPLC-PDA-FLD with PHRED and a post-column derivatization system. Food Additives & Contaminants: Part A, 28 (4). pp. 494-501. ISSN 1944-0049

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Abstract

A new method for the simultaneous quantification of 12 mycotoxins was developed and optimized using reverse phase high performance liquid chromatography (RP-HPLC) with a photodiode array (PDA) and fluorescence detector (FLD), a photochemical reactor for enhanced detection (PHRED) and post-column derivatization. The mycotoxins included aflatoxins (AFB1, AFB2, AFG1, and AFG2), ochratoxin A (OTA), zearalenone (ZEA), deoxynivalenol (DON), fumonisins (FB1, FB2, and FB3), T-2 and HT-2 toxins. A double sample extraction with a phosphate-buffered saline solution (PBS) and methanol was used for co-extraction of mycotoxins, and a multifunctional immunoaffinity column was used for cleanup. Optimum conditions for separation of the mycotoxins were obtained to separate 12 mycotoxins in FLD and PDA chromatograms with a high resolution. The method gave recoveries in the range 72–111% when applied to spiked corn samples. The limits of detection (LOD) were 0.025 ng/g for AFB1 and AFG1, 0.012 ng/g for AFB2 and AFG2, 0.2 ng/g for OTA, 1.5 ng/g for ZEA, 6.2 ng/g for FB1, FB3 and HT-2 toxin, 9.4 ng/g for FB2 and T-2 toxin, and 18.7 ng/g for DON. In addition, the limits of quantification (LOQ) ranged from 0.04 ng/g for AFB2 and AFG2 to 62 ng/g for DON. The method was successfully applied to the determination of these mycotoxins in 45 cereal samples obtained from the Malaysian market. The results indicated that the method can be applied for the multi-mycotoxin determination of cereals.

Item Type:	Article (Journal)
Additional Information:	6915/33304
Uncontrolled Keywords:	high-performance liquid chromatography, mycotoxins, cereals
Subjects:	Q Science > QD Chemistry
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Pharmacy > Department of Pharmaceutical Chemistry
Depositing User:	Dr. Alfi Khatib
Date Deposited:	13 Dec 2013 11:24
Last Modified:	13 Dec 2013 11:24
URI:	http://irep.iium.edu.my/id/eprint/33304

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