Methods, compositions, and systems for
steeping, propagation and
fermentation, particularly large-scale operations for production of
starch and
ethanol and
fermentation product streams are provided. Addition of
mycotoxin mitigating enzymes or microorganisms expressing
mycotoxin mitigating enzymes to
steeping, propagation, and / or
fermentation tanks, and / or to post-fermentation product streams, mitigates
mycotoxin levels in fermentation co-products obtained from mycotoxin contaminated feedstocks.