Table 2.
Extracting Solvents |
DPPH IC50 (μg/mL) |
ABTS IC50 (μg/mL) |
Superoxide IC50 (μg/mL) |
Hydroxyl IC50 (μg/mL) |
---|---|---|---|---|
n-Hexane | 126.57 ± 6.23 * | 103.05 ± 2.41 * | >400 | 51.94 ± 0.79 * |
Chloroform | 167.17 ± 7.13 | 93.70 ± 5.06 * | >400 | 82.39 ± 2.62 * |
Dichloromethane | 96.90 ± 7.68 | 82.31 ± 2.15 * | >400 | 88.19 ± 2.09 * |
Ethyl acetate | 95.12 ± 2.63 * | 91.19 ± 0.88 * | >400 | 55.25 ± 1.25 * |
Acetone | 65.08 ± 1.44 * | 64.35 ± 1.58 * | >400 | 42.99 ± 0.19 * |
Methanol | 22.42 ± 0.99 ** | 34.41 ± 0.78 ** | 117.66 ± 2.56 * | 37.81 ± 1.56 * |
Ethanol | 39.65 ± 0.83 * | 27.68 ± 0.31 ** | >400 | 56.05 ± 2.52 * |
BHT a | 36.94 ± 0.49 ** | 11.05 ± 0.26 ** | N.A. b | 61.51 ± 2.46 * |
Results are expressed as half inhibitory concentration (IC50) of each free-radical scavenging activity; a Butylated hydroxytoluene (BHT) used as positive control; b N.A. indicates not available; * p < 0.05 and ** p < 0.01 compared with the control.