INVESTIGADORES
BARTOSIK Ricardo
congresos y reuniones científicas
Título:
Toxigenic fungi in corn (maize) stored in hermetic plastic bags
Autor/es:
CLAUDIA CASTELLARI; FACUNDO MARCOS VALLE; JEREMIAS MUTTI; LEANDRO CARDOSO; RICARDO BARTOSIK
Lugar:
Estoril, Portugal
Reunión:
Conferencia; International Working Conference on Stored Product Protection; 2010
Resumen:
In Argentina, 35 million tonnes are
stored in hermetic plastic bags. Inside the bags, the modified atmosphere has
an effect on stored grains, insects and fungi. Fungi species typically isolated
from stored grains consist of species of the genera Aspergillus, Penicillium,
Fusarium and xerophilic fungi, some
of which are potential producers of mycotoxins. The province
of Entre Rios, Argentina, is an important area of
study because much of the production of maize stored in bags is supplying the
poultry industry demand. The objective of this study was to identify
mycotoxigenic fungi species in corn stored in hermetic plastic bags, located in
three Departments of Entre Rios province. A total of 176 samples of corn were
analyzed, stored in 23 bags located in the Departments of Paraná (west region),
La Paz (northern region)
and Tala (central region). Two potential producers of Aflatoxins (A. flavus and A. parasiticus) and a potential producer of Fumonisins (F. verticilloides) were identified in
all the plastics bags evaluated. In La Paz Department, Aspergillus spp. and F. verticilloides were detected in 66.7%
and 54% of samples, respectively. In Tala Department, Aspergillus spp. were detected in 63.3% and F. verticilloides in 43.6%, while in Parana, Aspergillus spp. was detected in 88.2% of the evaluated samples and
F. verticilloides in 41.4% of the
samples. The results revealed that mycotoxigenic fungi can develop in corn
stored in hermetic plastic bags. This implies a potential risk of contamination
with aflatoxins and /or fumonisins in the grain lots stored inside these bags.