Table 1. Antioxidant activities of AOPs from the skin of odorous frogs.
| Samples | Free radical scavenging activity (%) |
||
|---|---|---|---|
| ABTS+ | Figure | DPPH | |
| H2O | ND | ND | |
| Vitamin C | 98.52 ± 1.34 | 93.97 ± 1.49 | |
| Andersonin-AOP1 | 99.28 ± 0.56 | 5A | ND |
| Andersonin-AOP2 | 98.95 ± 1.00 | S3 | 89.39 ± 2.31 |
| Andersonin-AOP3 | 98.98 ± 0.95 | S4 | 64.29 ± 1.43 |
| Andersonin-AOP4a | 91.80 ± 1.79 | S5 | 69.36 ± 1.37 |
| Andersonin-AOP5a | 99.70 ± 0.44 | S6 | 71.90 ± 0.96 |
| Andersonin-AOP6 | 96.46 ± 0.69 | 5A | ND |
| Andersonin-AOP7 | 99.07 ± 0.85 | S7 | 79.88 ± 1.29 |
| Andersonin-AOP8a | 99.61 ± 0.17 | S8 | 55.78 ± 0.98 |
| Andersonin-AOP8b | 97.61 ± 1.84 | S9 | 72.36 ± 2.01 |
| Andersonin-AOP8c | 90.61 ± 1.89 | S10 | 61.11 ± 1.46 |
| Andersonin-AOP8e | 99.28 ± 0.62 | S11 | 78.21 ± 2.75 |
| Andersonin-AOP9 | 51.33 ± 1.63 | S12 | 11.90 ± 2.39 |
| Andersonin-AOP10a | 99.70 ± 0.44 | S13 | 87.32 ± 0.35 |
| Andersonin-AOP11a | 99.47 ± 0.57 | S14 | 90.23 ± 4.59 |
| Andersonin-AOP11c | 94.80 ± 1.05 | S15 | 65.38 ± 3.12 |
| Andersonin-AOP12 | 99.61 ± 0.44 | 5A | 75.24 ± 2.52 |
| Andersonin-AOP13 | 84.69 ± 0.58 | S16 | 33.02 ± 1.45 |
| Andersonin-AOP14a | 99.64 ± 0.55 | S17 | 67.55 ± 1.58 |
| Andersonin-AOP14b | 98.31 ± 1.13 | S18 | 70.49 ± 2.51 |
| Andersonin-AOP14d | 99.30 ± 1.13 | S19 | 85.32 ± 3.78 |
| Andersonin-AOP15 | 99.04 ± 1.57 | S20 | 91.01 ± 4.37 |
| Andersonin-AOP16 | 98.32 ± 1.35 | S21 | 86.19 ± 1.72 |
| Andersonin-AOP17 | 66.67 ± 1.81 | S22 | 35.24 ± 2.08 |
| Andersonin-AOP18 | 99.16 ± 1.45 | S23 | 40.23 ± 2.98 |
| Andersonin-AOP19a | 60.00 ± 1.92 | 5A | ND |
| Andersonin-AOP20 | 99.82 ± 0.09 | 5A | ND |
| Andersonin-AOP21a | 94.69 ± 0.58 | S24 | 57.98 ± 4.92 |
| Andersonin-AOP22 | 99.25 ± 1.28 | S25 | 60.79 ± 1.53 |
| Andersonin-AOP23 | 97.95 ± 2.15 | S26 | 94.38 ± 0.50 |
| Andersonin-AOP24 | 99.96 ± 0.06 | S27 | ND |
| Andersonin-AOP25 | 95.74 ± 2.33 | S28 | 77.41 ± 0.87 |
| Andersonin-AOP26 | 80.77 ± 4.36 | S29 | 41.27 ± 5.09 |
| Wuchuanin-AOP1 | 33.12 ± 1.23 | S30 | ND |
| Wuchuanin-AOP2 | 13.26 ± 0.51 | S31 | ND |
| Wuchuanin-AOP3 | 17.21 ± 1.01 | S32 | ND |
| Wuchuanin-AOP4 | 11.89 ± 0.89 | S33 | ND |
| Wuchuanin-AOP5 | 92.34 ± 2.31 | 5B | ND |
All AOPs were evaluated at a concentration of 50 μM. H2O and vitamin C were used as negative and positive controls, respectively. ‘ND’ indicates ‘Not Detectable’. Data are mean values of three independent experiments performed in triplicate.