Stability of zearalenone in naturally contaminated corn during Nigerian traditional brewing.

The extent of carryover of zearalenone in mouldy substrate guinea-corn into native beer, burukutu, was determined using a laboratory adaptation of the traditional brewing procedure. Mean zearalenone carryover into finished product was 51.4 +/- 7.3% of that in the starting mixture, suggesting a moderate stability. Some 12.1 +/- 3.3% was removed with discarded solid residue.