الكشف عن التلوث بفطور التخزين و الافلاتوكسينات في بذور فول الصويا

A total of /242/ fungal isolates belonging to /18/ genera have been obtained from nine samples of local and imported soybean seeds. The isolation was on PDA, MSA media and blotter paper. The most prevalent genus was Aspergillus where the contamination percentage was 88.33% in some samples, and the most important species were A. flavus, A. parasiticus, A. niger, followed by other genera Penicillium, Fusarium, Rhizopus Absidia, Mucor, Alternaria, Trichoderma. The total Afaltoxins (B1, B2, G1, G2) were assessed by minicolumn aflatest method using vicam Flurometer where all samples were contaminated with Aflatoxins; and the highest percentage was 28ppb in local sample. The moisture content of the seeds did not show obvious relationship with the Aflatoxins concentration while the percentage of seeds germination affected by fungal infection; and it was low in general, especially on the non-sterile seeds on PDA media and blotter paper.