Table 1.
IC50 values of various extracts of R. arvensis
| Antioxidant assays | |||
|---|---|---|---|
| IC50 (µg/mL) | |||
| Extract | DPPH free radical scavenging assay | Hydrogen peroxide scavenging assay | Phosphomolybdenum assay |
| Chloroform extract | 330.29 ± 0.01 | 124.36 ± 0.01 | 52.58 ± 0.01 |
| Chloroform:methaol extract | 186.28 ± 0.01 | 101.6 ± 0.01 | 69.39 ± 0.03 |
| Methanol extract | 34.71 ± 0.02 | 65.73 ± 0.01 | 66.06 ± 0.01 |
| Methanol:acetone extract | 285.28 ± 0.01 | 134.68 ± 0.01 | 63.09 ± 0.01 |
| Acetone extract | 264.08 ± 0.01 | 69.55 ± 0.01 | 56.29 ± 0.01 |
| Methanol:water extract | 47.61 ± 0.02 | 43.53 ± 0.02 | 77.95 ± 0.01 |
| Water extract | 85.11 ± 0.02 | 51.27 ± 0.01 | 74.37 ± 0.01 |
| Ascorbic acida | 6.38 ± 0.01 | 39.05 ± 0.01 | 26.16 ± 0.01 |
| LSD value | 8.14 | 6.30 | 9.90 |
| CV | 12.01% | 8.49% | 12.72% |
| R2 | 0.96 | 0.97 | 0.96 |
p < 0.05.
LSD least significant difference, CV coefficient of variation, LD 50 lethal dose, 50%, IC 50 half maximal inhibitory concentration.
aPositive control values are expressed as ascorbic acid (AA) (average ± SD; n = 4).