Zeralenone and ergosterol contents in corn samples of Transylvania, Romania

70 corn samples for feed use out of the harvests of the years 2001 and 2002 were collected randomly in Transylvania, Romania and analysed for zearalenone and for ergosterol as fungal mass indicator. High ergosterol contents were found in some samples with a maximum value of 72 mg/kg, zearalenone contents showed values between 4 and 2250 µg/kg in samples positive, indicating a rather high degree of fungal contamination as well as a serious zearalenone contamination.