EN
Seed skins and cotyledons of various species and varieties of vetch contain pepsin, trypsin, and chymotrypsin inhibitors. The highest activity of pepsin inhibitor occurs in the skin of winter vetch, common vetch, bush vetch and in the cotyledon of winter vetch. Fine leaved vetch and large yellow vetch show the highest antitrypsin activity. Chymotrypsin activity is inhibited mostly by skin inhibitors of bush vetch and common vetch.