Changes in gross chemical composition, phytic acid and α-galactosides content in peas (cv. Cyrkon) and soybean (cv. Aldana) seeds as affected by different processing techniques (autoclaving, soaking and cooking, and germinating) were studied. In addition, biological indices of seed protein quality (BV, TD, and NPU) were also determined. The processing methods increased the content of protein and ether extract in final products, and decreased the content of phytic acid in soybean seeds. Germination altered relative proportions of α-galactosides in peas, whereas in soybean seeds the content of raffinose and verbascose was totally reduced. The processing techniques did not affect net protein utilization (NPU = BV x TD), determined for peas. In contrast, germination significantly (P < 0,05) lowered the NPU value determined for soybeans.