Effect of Phosphine Fumigation on the Growth of Aspergillus flavus and Aflatoxin Production

Khalid A. Habib, Suzan A. Al-Habeeb, Khalid Al-Obaidy

Abstract


The results of this study revealed significant effect of phosphine (PH3) on Aspergillus flavus growth. The percentages of growth reduction were 73%, 88% and 97% with the concentrations 2.5, 3.5, 4.5mg/ L, respectively.
The percentages of inhibition for aflatoxin B1 and B2 were 52%, 67%, 84% and 20%, 40%, 60%, respectively on Czapek Dox Ager medium ,while the inhibition was 77%, 86.2%, 92.6% and 64%, 73%,89%, respectively on natural rice grain medium.
The fungal growth and mycotoxin production increased again after two weeks from the exposure time, but with low level compared with control.

Keywords


Phosphine; Aflatoxin; Aspergillus

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