บทคัดย่องานวิจัย

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Filamentous fungi and mycotoxin detected in coconut.

Zohri, A. A.; Saber, S. M.;

Zentralblatt fur Mikrobiologie Year: 1993 Vol: 148 Issue: 5 Pages: 325-332 Ref: 45 ref.

1993

บทคัดย่อ

Filamentous fungi and mycotoxin detected in coconut.

Fungi (59 species and 1 variety belonging to 25 genera) were isolated from 25 coconut samples from markets in Egypt on glucose-Czapek's (25 genera and 55 species + 1 variety) and dichloran-glycerol (8 genera and 32 species + 1 variety) agar media at 28 deg C. The predominant fungi on both media were Aspergillus flavus, A. niger, Penicillium chrysogenum and Cladosporium cladosporioides. On glucose-Czapek's agar, A. flavus var. columnaris, P. oxalicum, Alternaria alternata, Rhizopus stolonifer and Trichoderma hamatum were also frequently isolated, while A. sydowii and Eurotium chevalieri were isolated with high frequency only on dichloran-glycerol medium. Chromatographic analysis of the chloroform extracts of the coconut samples revealed that 5 out of 25 samples tested were naturally contaminated with aflatoxin B1 (15-25 micro g/kg) and 3 samples contaminated with ochratoxin A (50-205 micro g/kg).