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Gewählte Publikation:

Lehner, SM; Neumann, NKN; Sulyok, M; Lemmens, M; Krska, R; Schuhmacher, R.
(2011): Evaluation of LC-high-resolution FT-Orbitrap MS for the quantification of selected mycotoxins and the simultaneous screening of fungal metabolites in food
FOOD ADDIT CONTAM A. 2011; 28(10): 1457-1468. FullText FullText_BOKU

A liquid chromatography-high-resolution mass spectrometry-based method is reported for the quantification of 20 selected mycotoxins and the simultaneous screening for 200 fungal metabolites in food. For regulated mycotoxins, such as aflatoxins, fumonisins, ochratoxin A, zearalenone and trichothecenes, the evaluation of the method performance characteristics, such as precision, trueness, limit of detection and matrix effects, has been exemplified for the matrix maize. In the case of the limit of detection, an alternative evaluation approach for high-resolution FT-Orbitrap data is proposed. Measurements of the signal-to-noise ratios obtained from xxxfull-profile modexxx data led to detection limits between 8 and 160 ng g(-1). Eight naturally contaminated wheat-and maize-based matrix test materials, originating from interlaboratory comparison studies, were used to confirm the trueness of the method for deoxynivalenol, zearalenone, fumonisin B(1) and B(2), HT-2, and T-2 toxin. In addition to accurate quantification of the most relevant mycotoxins, the full-scan chromatograms were used to investigate the potential of the FT-Orbitrap to screen simultaneously for a large number of fungal metabolites. First, a list of 200 metabolites, potentially being present in food samples, was established. Next, specific detection and identification criteria were defined, which are based on accurate mass, peak intensity and isotopologue ratio. The application of these criteria to the suspected metabolites from the list resulted in the putative identification of 13 fungal metabolites in addition to the target toxins.
Autor*innen der BOKU Wien:
Krska Rudolf
Lehner Sylvia
Lemmens Marc
Neumann Nora Katharina Nicole
Schuhmacher Rainer
Sulyok Michael
Find related publications in this database (using NML MeSH Indexing)
Chromatography, Liquid/methods*
Food Contamination*
Mass Spectrometry/methods*

Find related publications in this database (Keywords)
accurate mass
fungal metabolites
liquid chromatography
high-resolution mass spectrometry

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