Table 1 Comparisons of an angiotensin-converting enzyme (ACE) inhibition effects on the compounds (1–10) from barley seedlings (BS)
Compound | ACE inhibition | |
|---|---|---|
IC50 (µM)a | Type of inhibition, KI (µM)b | |
3-O-feruloylquinic acid (1) | 43.8 ± 0.6 | Noncompetitive, 41.4 ± 1.2 |
Lutonarin (2) | 15.9 ± 1.1 | Noncompetitive, 15.9 ± 0.3 |
Saponarin (3) | 24.4 ± 1.2 | Noncompetitive, 24.1 ± 0.9 |
Isoorientin (4) | 7.3 ± 0.1 | Noncompetitive, 6.6 ± 1.6 |
Orientin (5) | 24.4 ± 1.6 | Noncompetitive, 26.8 ± 1.7 |
Isovitexin (6) | 26.1 ± 0.5 | Noncompetitive, 21.1 ± 0.3 |
Isoorientin-7-O-[6-sinapoyl]-glucoside (7) | 36.2 ± 0.8 | Noncompetitive, 32.1 ± 1.3 |
Isoorientin-7-O-[6-feruloyl]-glucoside (8) | 29.8 ± 0.5 | Noncompetitive, 28.4 ± 0.9 |
Isovitexin-7-O-[6-sinapoyl]-glucoside (9) | 40.7 ± 0.1 | Noncompetitive, 37.2 ± 1.1 |
Isovitexin-7-O-[6-feruloyl]-glucoside (10) | 35.4 ± 0.1 | Noncompetitive, 33.2 ± 0.4 |
Quercetinc | 25.2 ± 0.2 | Noncompetitive, 24.9 ± 1.7 |