Abstract
Sacharomyces cerevisiae isolates were obtained from baker's yeast, soil, fruit and identified with PCR. Twenty-seven isolates of S. cerevisiae were screened for capacity of inhibition of aflatoxin production of Aspergillus flavus (A. flavus) on coconut extract agar media (CEA). The results showed that the coculture method of S. cerevisiae isolates and aflatoxin producing A. flavus on CEA medium could be used for screening the strains that are able to antagonize aflatoxin-producing A. flavus. On ground corn medium, with the rate of 104 aflatoxin-producing A. flavus spores and 108 S. cerevisiae yeast cells/g, S. cerevisiae was able to reduce the amount of aflatoxin produced by A. flavus in corn. In an in vivo experiment, it was found that addition of 108 cells of S. cerevisiae to one kg of duck feed contaminated with 300 ppb aflatoxin from 1 to 10 days of age reduced adverse effects of aflatoxin on the liver and kidneys of ducks
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