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Appl Microbiol. 1975 December; 30(6): 1050–1051.
PMCID: PMC376591

Effect of initial pH on aflatoxin production.


The effect of initial pH on aflatoxin production by Aspergillus parasiticus NRRL 2999 was examined in a semisynthetic medium. Maximal growth, aflatoxin production, and aflatoxin production per unit of growth occurred at initial pH levels of 5.0, 6.0, and 7.0 respectively. Initial pH levels less than pH 6.0 favored production of the B toxins, whereas levels greater than pH 6.0 favored production of the G toxins.

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Selected References

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  • Davis ND, Diener UL, Eldridge DW. Production of aflatoxins B1 and G1 by Aspergillus flavus in a semisynthetic medium. Appl Microbiol. 1966 May;14(3):378–380. [PMC free article] [PubMed]
  • Joffe AZ, Lisker N. Effects of light, temperature, and pH value on aflatoxin production in vitro. Appl Microbiol. 1969 Sep;18(3):517–518. [PMC free article] [PubMed]
  • Lie JL, Marth EH. Afltoxin formation by Aspergillus flavus and Aspergillus parasiticus in a casein substrate at different pH values. J Dairy Sci. 1968 Nov;51(11):1743–1747. [PubMed]
  • Reddy TV, Viswanathan L, Venkitasubramanian TA. High aflatoxin production on a chemically defined medium. Appl Microbiol. 1971 Sep;22(3):393–396. [PMC free article] [PubMed]

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