Table 2.
Antioxidant activities of MP leaf extracts
| Extraction solvent | FRAP(mmol Fe2+/g DE) | ABTS●+ (IC50 μg/mL) | DPPH●(IC50 μg/mL) | CAA (Hs27)(EC50 μg/mL) |
|---|---|---|---|---|
| Hexane | 300.65 ± 3.54a | 267.73 ± 5.58a | 327.40 ± 3.80a | 11.30 ± 0.68a |
| Ethyl acetate | 482.23 ± 5.81b | 322.63 ± 4.67b | 363.60 ± 4.26b | 37.32 ± 0.68b |
| Methanol | 811.07 ± 11.02c | 1264.33 ± 28.38c | 838.93 ± 27.40c | 208.94 ± 2.67c |
| Water | 1150.97 ± 2.93d | 997.73 ± 14.21d | 1368.00 ± 28.93d | 339.62 ± 2.07d |
| Positive controls | ||||
| Tx | - | 88.84 ± 3.76e | 26.08 ± 0.42e | 4.02 ± 0.15e |
| AA | 2889.59 ± 13.56e | 79.64 ± 2.22e | 22.95 ± 0.50f | ND |
| GA | 2560.15 ± 28.86f | ND | ND | ND |
| Cn | 2387.02 ± 46.65f | 31.29 ± 1.11f | 28.73 ± 0.34g | ND |
| Qn | ND | 46.95 ± 0.58g | 22.43 ± 0.58f | 0.57 ± 0.01f |
| PP | ND | ND | ND | 1.12 ± 0.08g |
Tx trolox, AA ascorbic acid, GA gallic acid, Cn catechin, Qn quercetin, PP polyphenon-60, DE dried extract, ND not done. Values are mean ± SD (n = 3). The mean values in each column with different letters (a-g) are significantly different (p < 0.05)