Abstract
This study aimed to assess the aflatoxin M1 (AFM1) levels in 72 samples of yogurt from eight processing plants in São Paulo, Brazil, and the ability of heat-killed cells of Saccharomyces cerevisiae (1010 yeast cells/g) to reduce AFM1 (0.5 µg/kg) in experimental yogurts (n = 3). Analyses were conducted by high performance liquid chromatography (HPLC). Only seven samples (9.8%) had AFM1 at a mean level of 0.071 ± 0.08 µg/kg. S. cerevisiae efficiently reduced (P < 0.05) the AFM1 levels in spiked yogurts, with a maximum reduction of 46% after 30 days of storage. Further studies should investigate potential effects of S. cerevisiae on the sensory properties of yogurts.
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