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Warth, B; Sulyok, M; Fruhmann, P; Mikula, H; Berthiller, F; Schuhmacher, R; Hametner, C; Abia, WA; Adam, G; Frohlich, J; Krska, R.
(2012): Development and validation of a rapid multi-biomarker liquid chromatography/tandem mass spectrometry method to assess human exposure to mycotoxins
RAPID COMMUN MASS SP. 2012; 26(13): 1533-1540. FullText FullText_BOKU

Abstract:
RATIONALE Mycotoxins regularly occur in food worldwide and pose serious health risks to consumers. Since individuals can be exposed to a variety of these toxic secondary metabolites of fungi at the same time, there is a demand for proper analytical methods to assess human exposure by suitable biomarkers. METHODS This study reports on the development of a liquid chromatography/electrospray ionization tandem mass spectrometry (LC/ESI-MS/MS) method for the quantitative measurement of 15 mycotoxins and key metabolites in human urine using polarity switching. Deoxynivalenol (DON), DON-3-O-glucuronide, DON-15-O-glucuronide (D15GlcA), de-epoxy DON, nivalenol (NIV), T-2 toxin, HT-2 toxin, zearalenone, zearalenone-14-O-glucuronide, a- and beta-zearalenol, fumonisins B1 and B2 (FB1, FB2), ochratoxin A (OTA) and aflatoxin M1 (AFM1) were determined without the need for any cleanup using a rapid and simple dilute and shoot approach. RESULTS Validation was performed in the range of 0.00540?mu g?L1 depending on the analyte and expected urinary concentration levels. Apparent recoveries between 78 and 119% and interday precisions of 217% relative standard deviation (RSD) were achieved. The applicability of the method was demonstrated by the analysis of urine samples obtained from Cameroon. In naturally contaminated urine samples up to six biomarkers of exposure (AFM1, DON, D15GlcA, NIV, FB1, and OTA) were detected simultaneously. CONCLUSIONS We conclude that the developed LC/MS/MS method is well suited to quantify multiple mycotoxin biomarkers in human urine down to the sub-ppb range within 18?min and without any prior cleanup. The co-occurrence of several mycotoxins in the investigated samples clearly emphasizes the great potential and importance of this method to assess exposure of humans and animals to naturally occurring mycotoxins. Copyright (c) 2012 John Wiley *** Sons, Ltd.
Authors BOKU Wien:
Adam Gerhard
Berthiller Franz
Krska Rudolf
Schuhmacher Rainer
Sulyok Michael
Warth Benedikt
BOKU Gendermonitor:

Find related publications in this database (using NML MeSH Indexing)
Adult
Biomarkers/chemistry
Biomarkers/urine
Cameroon
Chromatography, Liquid/methods*
Chromatography, Liquid/standards
Food Contamination/analysis
Humans
Linear Models
Male
Mycotoxins/chemistry
Mycotoxins/urine*
Reproducibility of Results
Sensitivity and Specificity
Tandem Mass Spectrometry/methods*
Tandem Mass Spectrometry/standards



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