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.