Effect of Processing and Cooking Methods on the Chemical Composition, Sugars and Phytic Acid of Soybeans

The present investigation was conducted to study the effect of processing (soaking and germination) and cooking methods (ordinary cooking and autoclaving) on the chemical composition, sugars and phytic of two varieties soybean seeds, Giza, 21 and Giza, 35. The processing and cooking methods caused increase in both protein and crude fiber contents. Meanwhile, crude oil and carbohydrates contents were decreased of the studied soybean seeds. Generally, the processing and cooking methods resulted in a decrease of raffinose, stachyose, verbascose, maltose and sucrose accompanied by an increase in glucose. These resulted revealed that the processing (soaking and germination) and cooking methods (ordinary cooking and autoclaving) was more effective in eliminating the contents of oligosaccharides and phytic acid in both varieties soybean seeds.