The predominant species of these isolated genera were Alternaria alternata (0.59 of specific relative density) and Aspergillus flavus (0.34).Aflatoxins, zearalenone and deoxynivalenol were not detected in all samples and only fumonisin B1 was detected in two samples from Entre Ríos Province at low concentration levels (108.0 and 105.0 μg/kg).