PN-5	hydrolysate from Protease N hydrolysis for 5 h
PX-5	hydrolysate from Protamex hydrolysis for 5 h
ACE	angiotensin I-converting enzyme
MW	molecular weight
SBP	systolic blood pressure
DBP	diastolic blood pressure
SHRs	spontaneously hypertensive rats
BW	body weight
RP-HPLC	reverse-phase high-performance liquid chromatography
IER	inhibitory efficiency ratio
HHL	hippuryl- L-histidyl-L-leucine
MWCO	molecular weight cut-off
HA	hippuric acid