Mycotoxin-Producing Potential of Some Aspergillus, Penicillium and Fusarium Isolates Found on Corn Grains and Sunflower Seeds in Egypt

Sixty-three isolates of Aspergillus, Penicillium and Fusarium, isolated from corn grains and sunflower seeds, were screened qualitatively for production of mycotoxins. Eighteen isolates of Aspergillus (out of 28), 18 isolates of Penicillium (out of 26) and 6 isolates of Fusarium (out of 9) proved to be toxic and produced mycotoxins. Eleven different known mycotoxins were detected in the chloroform extracts of the different isolates tested and these are aflatoxins B1, B2, G1 and G2, sterigmatocystin, ochratoxin A, citrinin, Penicillic acid, rubratoxin B, diacetoxyscripenol and zearalenone.