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Appl Environ Microbiol. 1973 June; 25(6): 1018-1019
Copyright © 1973 American Society for Microbiology. All Rights Reserved.

Improved Yield of Aflatoxin by Incremental Increases of Temperature

Department of Poultry Science, North Carolina State University, Raleigh, North Carolina 27607
Department of Microbiology, North Carolina State University, Raleigh, North Carolina 27607

ABSTRACT

Increasing the initial temperature of the rice fermentation of Aspergillus parasiticus NRRL 2999 from 15 to 21 C after 24 h of incubation and then to 28 C after 48 h resulted in about a fourfold increase in total aflatoxin over the usual fermentation which is held constant at 28 C for 6 days. The percentage of aflatoxin B₁, the most toxic component, in the total aflatoxin was also increased.