Table 1.
Free radical scavenging activity of different extracts of Bauhinia variegata Linn
| Test/standard group | IC50values ± SD (μg/ml) for free radical scavenging activity | |||
|---|---|---|---|---|
| Hydrogen peroxide | DPPH | Nitric oxide | Super oxide | |
| Ascorbic acid | 9.91 ± 1.03 | 30.55 ± 1.12 | — | — |
| BHA | 10.95 ± 2.11 | 29.11 ± 1.03 | 368.00 ± 2.60 | 435.40 ± 7.78 |
| BVRW | 11.74 ± 2.98 | 37.73 ± 1.37 | 478.80 ± 3.40 | 502.10 ± 8.00 |
| BVRA | 10.78 ± 1.70 | 36.01 ± 1.25 | 415.20 ± 2.88 | 445.30 ± 4.05 |
| BVSW | 10.23 ± 1.11 | 45.85 ± 2.49 | 405.80 ± 5.43 | 481.30 ± 5.00 |
| BVSA | 9.85 ± 0.93 | 30.50 ± 1.61 | 362.90 ± 3.80 | 414.60 ± 6.22 |
BVRW, BVRA, BVSW, BVSA: Bauhinia variegata root water, ethanolic and Bauhinia variegata stem water and ethanolic extracts, respectively; AA: Ascorbic acid, BHA: Butylated hydroxy anisole