Table 3. Comparison of ABTS+ radical scavenging activities of fingerroot
Samples | Scavenging activity (%)1) | IC50(μg/mL) |
200 μg/mL | 100 μg/mL | 50 μg/mL | 25 μg/mL | 12.5 μg/mL |
80% MeOH ext. | 76.5±1.8b | 57.1±2.1c | 39.5±1.1d | 24.6±2.3e | 10.5±0.8f | 75.0±2.4b |
80% EtOH ext. | 73.6±2.1b | 51.9±1.2c | 34.2±0.8d | 21.2±2.4e | 10.7±1.1f | 88.9±3.3b |
80% Acetone ext. | 74.9±0.9b | 53.6±0.7c | 34.9±1.3d | 19.5±1.3e | 12.3±1.9e | 85.5±3.2b |
Hot water ext. | 43.3±1.4c | 28.9±1.7e | 12.3±1.1e | 4.8±3.1f | 2.7±2.5f | >200a |
(+)-Catechin2) | 99.9±0.7a | 98.7±0.2a | 93.2±1.7a | 84.2±1.3a | 77.8±1.6b | 6.4±1.8f |
Scavenging activities are expressed as the means±SD of triplicate experiments. Different letters (a-f) within the same column indicate significant differences (p<0.05).
(+)-Catechin was used as a positive control.