Alternaria Mycotoxins in Sunflower Seeds: Incidence and Distribution of the Toxins in Oil and Meal

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Abstract
A survey of 150 sunflower-seed samples was carried out to evaluate the contamination from infection with Alternaria alternata with alternariol (AOH), alternariol monomethyl ether (AME) and tenuazonic acid (TA). A high percentage of the samples was contaminated with AOH (85%), AME, (47%), and TA (65%). The average levels detected were 187 μg/kg for AOH, 194 μg/kg for AME, and 6,692, μg/kg for TA. When sunflower seeds fermented by Alternaria alternata were processed under laboratory conditions to obtain the oil and meal, different distributions of Alternaria toxins between the oil and the meal were observed: whereas AOH, AME, and TA were detected in the meal, only AME and TA were detected in the oil, and the latter in a low percentage.

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