Table 1.

Angiotensin-converting enzyme (ACE) inhibitory activity of processed SPI

Sample	Inhibitory Activity (%)	IC50 (mg/mL)
Raw SPI	10.21 ± 4.0	n.d
Prozyme treated SPI	60.8 ± 2.0	0.980
P-SPI	88.24 ± 3.2	0.592
Captopril	94.20 ± 5.4	0.005

Data shows mean ± SD (n = 3). Values represent the means of three replicates ± S.D. n.d: Not determined.