Variety characteristics of soybean seeds in relation to protein and oil contents and activities of proteinase inhibitors

The protein and oil contents and the activity of proteinase inhibitors in six varieties of soybean have been studied. It has been found that the specific amidase activity of trypsin inhibitors ranges from 170 to 320 nominal units. Electrophoretic results indicates the presence in the water-soluble fraction of seven or eight components possessing inhibitor activity in relation to trypsin and chymotrypsin.