To obtain angiotensin converting enzyme（ACE） inhibitor from protease-digested rice bran protein, the method of salt-out was adopted to extract rice bran protein, which was then digested by pepsin, trypsin, papain separately or jointly. The hydrolysised products were separated through gel and ion-exchange chromatogram. The separated parts were determined for their ACE inhibitor activity. The results showed that the separated parts of protease-digested contained stronger ACE inhibitor activity with the strongest part coming from pepsin and trypsin joint degested...
