Associated mold fungi with collected yellow corn grains from different Egyptian governorates and their mycotoxins

Abstract: ABSTRACT
Isolation trails from grain samples of five yellow corn hybrids collected from different Egyptian governorates verified the occurrence of large number of mold fungi associated the grains of these corn hybrids. The isolated fungi were identified as Aspergillus niger, A. flavus, A. clavatus, A. candidus, A. ochraceus, Aspergillus sp., A. versicolor, Fusarium moniliforme, Fusarium solani, Fusarium oxysporum, Humicola sp., Mucor sp., Penicillium digitatum and Penicillium sp., as well as some unknown fungi. Among these surveyed governorates, the highest frequency of isolated mold fungi was recorded in Elmenya followed by Sharkiya governorate samples. Meanwhile, the least frequency of isolated mold fungi was recorded on surveyed yellow corn samples of Assuite and Qena governorates. On the other hand, the associated mold fungi were varied in their frequency on harvested grains of the five tested yellow corn hybrids i.e., SX-3062, SX-SHAMS, SX-3080, 3WC-352 and SX-30N11 from governorate to another where the occurrence of these mold fungi of the same hybrid was affected by the source of grain samples collection. It is clear also that occurrence of Aspergillus group was prevalent on tested yellow corn grains than the Fusarium group and other isolated fungi in all surveyed governorates. No one of Fusarium group was detected on collected yellow corn grain samples of Assuite governorate. Meanwhile, F. moniliforme did not detect in all tested grain samples of Qena governorate. All collected grain samples of the five tested yellow corn hybrids from Elmenya governorate were found to be contaminated with considerable quantities of aflatoxins. The highest amount of aflatoxins was recorded in grain samples of 3WC-352 collected from Elmenya governorate followed by SX-SHAMS (Elmenya) and SX-3080 (Giza). On the other hand, Aspergillus flavus was able to produce aflatoxins B1, B2, G1 and G2 in vitro where the quantities of aflatoxin B1 is higher than B2 meanwhile, G2 was higher than G1. Also, Aspergillus ochraceus was able to produce high amount of ochratoxin. Also, Fusarium moniliforme produce high quantity of zearalenone mycotoxin.
Key words: yellow corn grains, grain mold fungi, Aflatoxins, ochratoxin, mycotoxins, zearalenone
Publication year 2011
Organization Name
Author(s) from ARC
External authors (outside ARC)
    نوال عبد المنعم عيسي قسم النبات الزراعى - كلية الزراعة بمشتهر - جامعة الزقازيق ( فرع بنها )
    جهاد محمد دسوقي الهباء قسم النبات الزراعى - كلية الزراعة بمشتهر - جامعة الزقازيق ( فرع بنها )
    فتحى جاد محمد قسم النبات الزراعى - كلية الزراعة بمشتهر - جامعة الزقازيق ( فرع بنها )
    إبراهيم سابق أحمد سابق باحث في شركة مصر بيونير للبذور
Publication Type Researsh & Applied Activities
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