Table 2.
Capture capacity for O2•−, HOCl/OCl−, and •NO.
| EC50 (μg/mL) | |||
| O2•− | HOCl/OCl− | •NO | |
| Curcumin | 59.45 ± 5.85 b | 0.5336 ± 0.081 b | 15.69 ± 1.03 b |
| Gallic acid | 18.81 ± 0.46 c | 0.2843 ± 0.02 b | 604.5 ± 52.52 a |
| Quercetin | 13.48 ± 0.23 c | 0.2594 ± 0.04 b | 4.411 ± 1.69 c |
| Trolox | 436.6 ± 9.39 a | 4.578 ± 0.14 a | — |
| EERs | 100.5 ± 0.68 d | 3.195 ± 0.09 c | 95.43 ± 8.73 d |
| HFRs | 409.5 ± 26.36 a | 4.99 ± 0.15 a | 152.5 ± 4.11 e |
| CFRs | 348.7 ± 12.02 e | 3.028 ± 0.25 c | 148.2 ± 10.34 e |
| EAFRs | 144.7 ± 10.67 d | 2.323 ± 0.12 d | 49.7 ± 13.79 f |
|
| |||
| EC50 (μM) | |||
| O2•− | HOCl/OCl− | •NO | |
| Curcumin | 112.9 ± 11.14 b | 1.014 ± 0.15 b | 30.62 ± 2.01 b |
| Gallic acid | 110.6 ± 2.72 b | 1.672 ± 0.10 b | 3556 ± 309 a |
| Quercetin | 44.61 ± 0.75 c | 0.8583 ± 0.14 b | 14.59 ± 5.58 b |
| Trolox | 1813 ± 52.81 a | 17.82 ± 0.55 a | — |
| Emodin | 140.8 ± 1.44 d | 26.56 ± 0.74 c | 52.03 ± 4.28 c |
| Physcion | — | 33.1 ± 4.06 c | 377 ± 16.71 d |
| Chrysophanol | — | 23.56 ± 1.12 c | 243 ± 18.3 e |
Results are expressed as mean of the EC50 ± standard error (M ± SE), analyzed by one-way ANOVA with Tukey's post-test (different letters represent statistical difference) (− = no activity).