EFFECT OF SODIUM ACETATE ON GROWTH AND AFLATOXIN PRODUCTION BY Aspergillus parasiticus NRRL 2999

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Abstract
The effect of sodium acetate and propionate on growth and aflatoxin oroduction byA. DarasiticusNRRL 2999 was studied in AMY medium imodified AM medium + 2% yeast extract) to determine the possible use of this compound as a means of controlling aflatoxin production. At pH 4.5, concentrations of sodium acetate ≥ 1.0g/100 ml completely inhibited growth and prevented aflatoxin production, while levels of 0.6 and 0.8g/100 ml partially inhibited growth and decreased aflatoxin production by 70% and 99%, respectively. Examination of the effect of initial pH on the inhibitory action of sodium acetate indicated that the extent of inhibition was a function of the initial pH. The effect of propionic acid on growth and aflatoxin production was also examined, and this compound was found to be more inhibitory than acetate. The role of sodium acetate and propionic acid as a means of controlling aflatoxin production appears to be promising.