Mycopathologia

, Volume 110, Issue 3, pp 133–138 | Cite as

Survey of the mycoflora and mycotoxins of cotton seeds and cotton seed products in Egypt

  • M. B. Mazen
  • I. A. El-Kady
  • Sabah M. Saber
Article

Abstract

Thirty-nine species and 16 fungal genera were isolated from Egyptian cotton seeds, cotton seed meal and cotton seed cake on 1% glucose-Czapek's agar medium incubated at 28 °C. Aspergillus was the most frequent genus and it emerged in 87–100% of the samples contributing 70–98% of total fungi in the three substrates tested. The most common species were A. niger, A. flavus, A. fumigatus, A. terreus and Rhizopus stolonifer; A. niger, A. fumigatus and Penicillium corylophilum; and A. niger, A. flavus, A. terreus, A. nidulans and Rhizopus stolonifer, respectively. Cotton seeds and cotton seed products were naturally contaminated by aflatoxin B1 and B2. About 16% of the different substrates tested were positive for aflatoxin contamination. No citrinin, ochratoxin A, patulin, sterigmatocystin, diacetoxyscirpenol, T-2 toxin or zearalenone were detected in the samples assayed.

Key words

Aflatoxins cotton seeds cotton seed products mycoflora and mycotoxins 

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Copyright information

© Kluwer Academic Publishers 1990

Authors and Affiliations

  • M. B. Mazen
    • 1
  • I. A. El-Kady
    • 1
  • Sabah M. Saber
    • 1
  1. 1.Botany Department, Faculty of ScienceUniversity of AssiutAssiutEgypt

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