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Effects of sodium chloride propionic acid and ammonium hydroxide on growth of aspergillus flavus on corn and aflatoxin production


, : Effects of sodium chloride propionic acid and ammonium hydroxide on growth of aspergillus flavus on corn and aflatoxin production. ASEAN Food Journal 7(1): 24-29

Inhibitory effects on growth and aflatoxin production of Aspergillus flavus in ground corn by sodium chloride, propionic acid and ammonium hydroxide were examined. Sodium cholride at concentrations of 40 and 80 mg/g could inhibit only aflatoxin production while 120 mg/g of sodium chloride inhibited both growth and aflatoxin production of A. flavus in corn after 7 and 14 days of incubation. The addition of propionic acid to the corn at concentrations of 500, 1000 and 1500 .mu.g/g enhanced the production of aflatoxin whereas 2000 and 2500 .mu.g/g of propionic acid inhibited the formation of aflatoxin. Two parts per thousand of ammonium hydroxide reduced the production of aflatoxin in corn by 45% and 60% at days 7 and 14, respectively while 0.5, 1.0 and 1.5% ammonium hydroxide completely inhibited the production of aflatoxin. The addition of ammonium hydroxide in the 7 and 14 day-old cultures showed that the higher the concentration used, the lower the aflatoxin detected.


Accession: 007284865

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Related references

Niyomca, P.; Suttajit, M., 1988: Inhibitory effects of benzoic, propionic and sorbic acids on growth and aflatoxin production of Aspergillus flavus in peanuts and corn. After mixing groundnuts and maize with acid mixtures of benzoic:propionic, benzoic:sorbic and propionic:sorbic at 0.2:0.1, 0.2:0.3 and 0.1:0.15%, respectively, growth of A. flavus ATCC 15546 and its aflatoxin production were completely inhibited....

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