Table 4 DPPH radical scavenging activity and reducing power of methanolic extracts of T. apollinea in comparison with gallic acid
Antioxidant activity | |||||
|---|---|---|---|---|---|
Concentration (µg/ml) | Inhibition (%) | Concentration (µg/ml) | Absorbance 700 nm | ||
GAE | TAE | GAE | TAE | ||
10 | 38.1 ± 1.8 | 40.6 ± 2.2 | 10 | 0.061 ± 0.015 | 0.268 ± 0.024 |
20 | 43.1 ± 2.7 | 54.6 ± 1.8 | 20 | 0.072 ± 0.022 | 0.298 ± 0.028 |
30 | 58.1 ± 1.2 | 59.6 ± 3.8 | 30 | 0.084 ± 0.017 | 0.314 ± 0.022 |
40 | 62.1 ± 3.4 | 61.5 ± 2.6 | 40 | 0.091 ± 0.013 | 0.333 ± 0.031 |
50 | 67.5 ± 4.3 | 72.1 ± 3.3 | 50 | 0.110 ± 0.011 | 0.340 ± 0.024 |
IC50 | 29.41 | 31.09 | R2 value | 0.956 | 0.984 |