الفهرس 
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Abstract
Cereals and legumes have a significant position in human and animal nutrition (protein, fat, fiber and different minerals) particularly in the dietary pattern of low economic population from developing countries.
There is a gap between production and consumption of corn and soybean in Egypt estimated by around 45% - 60%.
However, Egypt remains to be the fourth largest grain importer in the world despite government efforts to increase local production.
The main objectives of the current study were undertaken to investigate the physical properties, chemical composition and detection of aflatoxins and genetically modified organisms in imported yellow corn and soybean samples.
A number of tentative conclusions can be summarized based on the results obtained in this study as follow:
1- Broken and foreign matters of imported yellow corn samples were found to be from 4.1% in Bulgarian corn (Grade 1) up to 9.0 % (Grade 2) in Ukrainian corn as measured by Quality Assurance Department, Alexandria port authority.
2- Color and odor as indicator of sensory quality were found to be normal for imported yellow corn samples as measured by Quality Assurance Department, Alexandria port authority.
3- Damaged including heat part, foreign matters, splits soybean of other color of imported soybean samples were found to be from 13.98% in Ukrainian soybean up to 24.00% in USA soybean but all imported samples within standard levels for grade 1 and 2.
4- Imported yellow corn contained moisture from 8.63% (Bulgaria) to 9.58% (Ukraine), protein ranged from 8.75% (Bulgaria and Romania) to 9.80% (Ukraine), fat ranged from 3.48% (Romania) to 4.0% (Brazil), fiber from 2.1% (Brazil and Ukraine) to 2.5% (Bulgaria) and ash from 1.0% (Ukraine) to 1.5% (Bulgaria) while in Egyptian variety (SC128) moisture decreased to 6.6% and protein increased to 10.15%.
5- Soybean sample imported from Argentina (No. 8) contained the lowest amount of protein while soybean sample imported from USA (No. 1) and Egyptian variety (Giza 111) contained the highest amount of protein 37.3 – 37.6%.
6- The results of liquid chromatography (tested at Central Laboratory of Residue Analysis of Pesticides and Heavy Metals in Food, Agriculture Research Center) showed that five selected samples of each imported yellow corn and soybean samples as well as Egyptian corn variety (SC128) and soybean (Giza 111) were all free of aflatoxins.