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Reputable Mentor II
Reputable Mentor II
Monaci L, De Angelis E, Visconti A.
J Chromatogr A. 2011 Dec 2;1218(48):8646-54.
A sensitive and accurate method employing a single stage high resolution mass spectrometer equipped with a high-energy collision-dissociation cell (HCD) for the simultaneous determination of deoxynivalenol (DON), T-2 toxin (T-2) and HT-2 toxin (HT-2) in a processed bread model food has been developed. Two sample pre-treatment routes for the extraction of these mycotoxins were investigated, based on Mycosep® column clean up or QuEChERS-like procedure, respectively. The former approach suffered less from matrix effects and allowed to achieve in bread samples LODs of 7, 12 and 17 ng/g for T-2, HT-2 and DON, respectively, with 0.5 ppm mass accuracy. Two acquisition modes, full scan MS and all ion fragmentation, exploiting the fragmentation features offered by an HCD chamber and integrated within the Orbitrap analyser, were compared for quantitative purposes. The method was applied to investigate the degradation of these mycotoxins during bread processing using a bread model food. Most T-2 hydrolyzed to HT-2 during dough preparation, and about 20–30% of HT-2 and DON was degraded during bread baking.
National Research Council of Italy (ISPA-CNR), Bari, Italy.
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