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박은희,송경빈 ( Eunhee Park,Kyung Bin Song ) 한국응용생명화학회 1997 Applied Biological Chemistry (Appl Biol Chem) Vol.40 No.1
Angiotensin converting enzyme (ACE) inhibitors were isolated and purified from pig blood plasma. Pig blood plasma was obtained after removing blood cells by centrfugation, followed by the addition of anticoagulant to whole pig blood. To precipitate plasma proteins, pig blood plasma was treated with 4% trichloroacetic acid (TCA) as a final concentration. ACE inhibitors were isolated from plasma protein hydrolysates and TCA supernatant, using ultrafiltration, gel permeation chromatography, and reverse-phase high pressure liquid chromatography. ACE inhibitors isolated from plasma hydrolysates and TCA supernatant had IC_(50) values of 23 μM and 2 μM, pentapeptide, respectively.