ABSTRACTTrypsin inhibitory activity (TIA) of 4 varieties (var) of soybeans was measured. Values (mg/g soybean) represent TIA extracted under conditions employed and are equivalent to a weighed amount of crystallized soybean trypsin inhibitors (TI). As the beans matured, the amount of TIA in the extract increased Dare variety had the sharpest increase, 13.4‐27.5 mg/g. Mean mdg of TI for Kanrich was 22.5; Verde, 21.7; Soylima, 17.5; and Dare, 21.8. Dehulled beans held 2.5 min in boiling water had 97–98 of the extractable TIA destroyed. Rinsing beans in water removed up to 10.2 TIA. Removing the testa from unrinsed beans reduced TIA up to 4.3. Decorticated, rinsed cotyledons remined 50.9 (Soylima) to 80.6 (Verde) of the extractable TIA. Beans which were soaked, germinated 3 days and rinsed twice daily lost up to 13.2
展开▼
