Abstract
Fusarium Head Blight or scab is an important disease mainly caused by Fusarium graminearum that occurs in Brazil and the world's wheat-growing areas. Moreover, there are direct damages caused by this disease and the infected kernels may be toxic for humans and animals due to the presence of mycotoxins (e.g deoxynivalenol - DON). DON contamination was evaluated in a total of 100 wheat samples, and 50 were from national production (Sao Paulo, Parana and Rio Grande do Sul states) and 50 were imported (Argentina and Paraguay). The samples were collected during the period of May to December, 2005 from companies that normally commercialize or process wheat and are analyzed by a thin layer of chromatography. Ninety-four percent of national wheat samples and 88% of the imported samples were DON contaminated. The mean level of the national wheat samples (332 µg.kg -1) was higher than (p < 0.05) imported wheat samples (90 µg.kg -1). Only 2 national wheat samples showed contamination higher than 1.250 µg.kg -1, which is the maximum level established by European Community Regulation.
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