Studies on maize grains deterioration under Egyptian condition
Abstract: This issue was carried out to study the changes in the Zea mays grains during storage such as fungi associated, kernel damage, moisture content, 100-grain weight and mycotoxin production (aflatoxins-ochratoxin A and zearalenone). The obtained data could be summarized as follows:
1- Isolation from Zea mays ears at early harvest stage of different cultivars, which collected from the extension fields in Menofya Governorate emphasized the presence of several fungi associated with grains as follows:
i- Sum of 697 isolates were recorded at zero time from the tested samples of early harvested corn ears collected from Menofya Governorate. The isolated fungi belong to 7 genera and 11 species and identified as: Cladosporium sp., Alternaria sp., Fusarium oxysporum, Fusarium sp., Aspergillus flavus, A. niger, Penicillium funiculosum, P. digitatum, Pencillium sp., Macrophomina sp. and Rhizopus sp.
ii- Macrophomina sp., Rhizopus sp., Cladosporium sp. and Alternaria sp. were recorded the highest percentage in all tested samples. Balady cv. recorded the highest frequency of isolated fungi, (135 isolate), followed by SC 122, (133, isolate) and TWC 352 (132, isolate). Dahab (50 isolate) and TWC 320 (27 isolate) hybrids recorded the least frequency of isolated fungi at zero time.
2- Storage fungi such as Aspergillus flavus, A. niger and Fusarium spp. increased 15 days after comparing with zero time. Field fungi such as Cladosporium sp., Alternaria sp. and Macrophomina sp. were disappeared after 15 days.
3- There were significant differences in the percentage of grain damage among the different tested samples.
4- All samples under investigation were free from mycotoxins (aflatoxin, ochratoxin and zearalenone) at both zero time and after 15 days.
Publication year 2002
Organization Name
Country Egypt
Author(s) from ARC
Publication Type PhD Thesis
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