Survey of toxigenic fungi and natural co-occurrence of mycotoxins in poultry feeds from Entre Ríos, Argentina

MONGE, MARÍA DEL PILAR; DALCERO, ANA MARÍA; MAGNOLI, CARINA; CHIACCHIERA, STELLA MARIS

FOOD ADDITIVES AND CONTAMINANTS. PART B - SURVEILLANCE COMMUNICATIONS

TAYLOR & FRANCIS LTD

Lugar: Londres; Año: 2013 p. 1 - 26

1939-3210

A total of 120 pelleted poultry feed samples from Entre Ríos Province, Argentina were evaluated. The aim was to investigate: i) the presence of significant toxigenic fungi, as well as to determine the ability to produce aflatoxins (AFs) by Aspergillus section Flavi strains isolated, and ii) to evaluate the natural co-occurrence of AFs, fumonisin (FBs), gliotoxin, diacetoxyscirpenol (DAS), HT-2 and T-2 toxin by HPLC-MS/MS. Total fungal counts are below of the established value (1 x 104 CFU g-1). Aspergillus flavus and A. parasiticus were the only aflatoxigenic species isolated. Co- occurrence of fumonisin B1 (FB1), HT-2 and T-2 toxin were detected in 100% of the feeds in mean levels ranged from 4501.7 to 5813.4; 6.7 to 21.6 and 19.6 to 30.3 Cg kg-1, respectively. A high number of starter samples were co-contaminated with aflatoxin B1 (AFB1), FB1, HT-2 and T-2 toxins. Gliotoxin and DAS were not found in this survey.