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Mycotoxin production by
fungi isolated from stored grains
Amadi, J. E.* and Adeniyi, D. O.
Department
of Plant Biology, University of Ilorin, P.M.B. 1515, Ilorin,
Nigeria.
*Corresponding author. E-mail:
jamadi2007@yahoo.com.
Tel: 08033710308.
Accepted
2 January, 2009 |
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A study was conducted to determine the fungi associated with
maize (Zea mays), rice (Oryza sativa) and
millet (Pennisetum typhoiodes) in storage. Mycotoxin
production by isolated fungi was subsequently evaluated
using the thin layer chromatography technique. Eight
different fungi were isolated altogether namely
Aspergillus terreus, Aspergillus flavus, Aspergillus
niger, Aspergillus oryzae, Penicillium italicum, Penicillium
spinulosum, Rhizopus stolonifer and Fusarium sp.
The results of this study show that all the fungi produced
one toxin or the other as detected in the culture filtrates
of isolated fungi. However, only three of these toxins were
identified namely aflatoxin B1, fumonisin B1, and
zearalenone. The retention factors (Rf) of all
the toxins produced were determined.
Key
words:
Maize, rice, millet, storage fungi, mycotoxins. |
