Survey of the mycoflora and mycotoxins of cotton seeds and cotton seed products in Egypt.
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 degrees 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.
Mazen
M B
MB
Botany Department, Faculty of Science, University of Assiut, Egypt.
el-Kady
I A
IA
Saber
S M
SM
D001230:Aspergillus / Q000302:isolation & purification; D002855:Chromatography, Thin Layer; D003369:Cottonseed Oil / Q000032:analysis*; D004534:Egypt; D005516:Food Microbiology; D005658:Fungi / Q000302:isolation & purification*; D003368:Gossypium / Q000382:microbiology*; D006801:Humans; D009183:Mycotoxins / Q000032:analysis*; D010407:Penicillium / Q000302:isolation & purification; D012233:Rhizopus / Q000302:isolation & purification
D003369:Cottonseed Oil; D009183:Mycotoxins