Quality of Feed Cereals in Tunisia: Natural Occurrence of the Mycotoxin Deoxynivalenol
نویسندگان
چکیده
Bensassi, F., Zarrouk, A., Gargouri-Kammoun, L., Hajlaoui, M.R., and Bacha, H. 2011. Quality of feed cereals in Tunisia: Natural occurrence of the mycotoxin deoxynivalenol. Tunisian Journal of Plant Protection 6: 11-19. In Tunisia, the contamination of cereal grains with mycotoxins is very common. Such a situation is chiefly favored by the Mediterranean climate of the country, which plays a critical role in the development of toxigenic fungi and consequently, the accumulation of toxic metabolites. A survey of the natural occurrence of deoxynivalenol (DON), the most important group of fusarial mycotoxins, in barley and triticale intended for animal feeding and harvested in 2009 from the cultivating location of Bizerte has been conducted. A total of 21 samples was analyzed for DON content using an efficient high performance liquid chromatography (HPLC) with UV visible detector set at 220 ηm. Our investigation showed that 90% of triticale samples were contaminated with DON with levels ranging from 0.5 to 2.8 μg/g whereas about 64% of barley samples showed DON contamination with amounts varying from 0.4 to 1.7 μg/g. We noticed that 77.8 and 85.7% of triticale and barley positive samples, respectively, exceeded the maximum permitted limit of 1.25 μg/g set by the European Commission for unprocessed cereals.
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