Formation of Zearalenone Metabolites in Tempeh Fermentation.

Tempeh is a common food in Indonesia, produced by fungal fermentation of soybeans using , as well as , for inoculation. Analogously, for economic reasons, mixtures of maize and soybeans are used for the production of so-called tempeh-like products. For maize, a contamination with the mycoestrogen zearalenone (ZEN) has been frequently reported.