บทคัดย่องานวิจัย

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Aflatoxin reduction in corn through field application of competitive fungi

DORNER, J.W., COLE, R.J. and WICKLOW, D.T.

Journal of Food Protection 62 : 650-656.

1999

บทคัดย่อ

Aflatoxin reduction in corn through field application of competitive fungi.

Soil in corn plots was inoculated with nonaflatoxigenic strains of Aspergillus flavus and A. parasiticus during crop years 1994 to 1997 to and the effect of application on preharvest aflatoxin contamination of corn was determined.  Inoculation resulted in significant increases in the total A. flavus/parasiticus soil population in treated plots, and that population was dominated by the applied strain of A. parasiticus.  In the years when weather conditions favoured aflatoxin contamination (1996 and 1997), corn was predominately colonised by A. flavus as opposed to A. parasiticus.  In 1996 and 1997, the aflatoxin concentrations in corn from treated plots averaged 24.0 and 29.8 mg/kg, respectively, reductions of 87 and 66%, respectively, compared with control plots.  Together, the data indicated that although the applied strain of A. parasiticus dominated in the soil, the nonaflatoxigenic strains of A. flavus were more responsible for the observed reductions in aflatoxin contamination.