Table 6.
Inhibitory concentration inducing 50% ACE activity inhibition (IC50) of the 11 protein samples before (salivary sample), during (gastric digestion), and after SGID (intestinal digestion).
| ACE-IC50 (µg mL−1) | Salivary Sample | Gastric Digestion | Intestinal Digestion |
|---|---|---|---|
| PeaP1 | ND | 90.70 ± 25.80 CD | 101.19 ± 23.15 cd |
| PeaP2 | 407.78 ± 28.10 | 37.37 ± 19.83 D | 221.79 ± 45.57 ab |
| PeaP3 | ND | 47.38 ± 44.33 CD | 185.54 ± 9.97 abc |
| PeaP4 | ND | 187.97 ± 45.38 AB | 29.54 ± 34.98 d |
| HPeaP | 148.97 ± 40.79 | 93.37 ± 24.74 CD | 113.64 ± 50.51 cd |
| WP1 | ND | 60.79 ± 12.22 CD | 63.82 ± 20.18 d |
| WP2 | ND | 186.78 ± 0.91 AB | 265.46 ± 22.88 a |
| PP | ND | 107.34 ± 40.79 BCD | 85.23 ± 19.24 d |
| FBP | ND | 133.50 ± 35.09 BC | 52.02 ± 43.06 d |
| OP | ND | 98.04 ± 32.21 CD | 99.46 ± 9.88 cd |
| WhP | ND | 126.38 ± 82.34 BCD | 127.50 ± 25.61 bcd |
Values are reported as the mean from triplicate determinations with SD. “ND” indicates the IC50 value was too high to be evaluated using this test. Values not sharing any common superscript letter are significantly different according to one-way ANOVA procedure followed by Tukey’s test (intestinal digestions were compared together (a–d, small letters) and gastric digestions together (A–D, capital letters)). PeaP1–PeaP4 (4 grades of pea protein), HPeaP (hydrolyzed pea protein), WP1–WP2 (2 grades of wheat protein), PP (potato protein), FBP (fava bean protein), OP (oat protein) and WhP (Whey protein).