Chromatographic Methods forTrichothecenes
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Trichothecenes are secondary metabolites of Fusarium, Stachybotrys, Myrothecium, Trichothecium
, and other fungal genera and are classified into two groups, macrocyclic and nonmacrocyclic trichothecenes (see
Chapter 15 for the former). Although about 100 nonmacrocyclic trichothecenes have been identified, only a few have been detected
as naturally occurring contaminants of grains and other agricultural commodities. Deoxynivalenol (DON) and nivalenol (NIV),
which are type B trichothecenes, possessing a conjugated 8-carbonyl group, and type A trichothecenes, T-2 toxin (T-2), HT-2
toxin (HT-2), and diacetoxyscirpenol (DAS), which lack the 8-carbonyl group, are the main ones found Fig. 1
).
Fig. 1.
Chemical structures of major trichothecenes occurring naturally in foods and feeds.
