Angiotensin-I converting enzyme (ACE), which encourages conversion
of angiotensin-I to angiotensin-II, acts an important physiological
role in regulating blood pressure. ACE inhibitory peptides
can restrain theactivityofACEandhavebeenshown tobeefficient
in lowering blood pressure in animal models and patients.1 It has
been reported that numbers of ACE inhibitory peptides have been
derived fromvarious food proteins by enzymatic hydrolysis or fermentation,
such as tilapia,2 jellyfish,3 wheat germ,4 rice,5 pea,6 sea
bream,7 cuttlefish,8 lizard fish1 and thornback ray.9