Assessment Level of Some Anti-Nutritional and Nutritional Factors In Some Egyptian Cultivated Soybean and Barley

As a main source of protein, soybeans (Glycine max (L) Merril) and barley (Hordeum vulgare) provide the human and animal nutrition essential amino acids that are required for healthy individuals. However, these crops contain secondary plant metabolites, considered as anti-nutritional factors, which display negative effects on nutritional qualities produced. Three genotypes of soybean Giza35 (G35), Giza21 (G21), and Giza83 (G83) and three genotypes of barley Giza134 (G134), Giza2006 (G2006), and Giza123 (G123) which together represent the crops harvested in Egypt, were analyzed for their nutritional value and the levels of antinutritional factors i.e. phytic acid, tannins, and total phenol. The ranges of anti-nutritional factors in soybean seeds were total phenols 18.9-35mg/g, tannins 16.23-18.33mg/g, and phytic acid 1.6-3.08%. On the other hand, the ranges of anti-nutritional factors in barley seeds were total phenols 21- 27.86mg/g, tannins 14.23-18mg/g, and phytic acid 1.2-1.41%. The significant differences among the two crops genotypes were in the total phenol content; it being the highest in both but significantly higher in soybean reaching 45 mg/g but with a larger deviation of values. Barley genotypes reached a highest content of 27.86 mg/g and a low of 21 mg/g. Phytic acid content was typically low in both. The other factors were similar in concentrations among different germplasms.