INVESTIGADORES
CHULZE Sofia Noemi
congresos y reuniones científicas
Título:
Potential Biocontrol agent for aflatoxins in peanuts in Argentina
Autor/es:
CHIOTTA, M.L; OVIEDO, S.; BARROS, G.G; TORRES, A.M; CHULZE, S.N
Lugar:
Estambul-Turquia
Reunión:
Simposio; International IUPAC Symposium on Mycotoxins and Phycotoxins; 2007
Institución organizadora:
IUPAC
Resumen:
Aflatoxin remain the most important mycotoxin problem in the world and
peanuts are ane of the major source of this toxin. Biocontrol by
competitive exclusion has been used as one of the most promising
strategy of controlling aflatoxin in peanuts. This study was undertaken to
evaluate the use of a non-toxigenic strains of A. flavus as a potential
biocontrol agent to reduce aflatoxin contamination of peanuts at harvest
time and during storage. The strain used in this study was a naturally
occurring A. flavus isolate selected based on toxin production and VCG
analysis and grown on rice. The plots were treated with 8, 12 and 16 kg/
ha of rice inoculum. The treatment with 16 kg/ha showed the highest
Aspergillus section Flavi counting. The analysis of aflatoxigenic ability
indicated a trend towards lower aflatoxin concentrations with increasing
inoculum rate. At harvest, peanuts were not contaminated with aflatoxins
also no toxin was detected after 6 month of storage.