Table 4.
% Inhibition of nitric oxide radical of different concentrations of tested fractions and compounds.
| Sample (µg/mL) | % Inhibition ± SD | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Total Alcohol Extract | Pet. Ether Fraction | Non Basic Fraction | Alkaloid-Rich Fraction | Isolated Compounds | Ascorbic Acid | ||||||
| 1 | 2 | 3 | 4 | 5 | 6 | ||||||
| 6.25 | 31.43 ± 13.05 | 5.16 ± 2.48 | 7.40 ± 4.56 | 10.56 ± 5.34 | 17.86 ± 15.85 | 10.40 ± 6.32 | 3.68 ± 2.57 | 6.66 ± 2.10 | 0.72 ± 1.25 | 7.40 ± 4.56 | 23.86 ± 8.91 |
| 12.5 | 51.43 ± 3.14 | 10.43 ± 3.25 | 20.06 ± 8.58 | 23.09 ± 3.04 | 28.10 ± 22.28 | 14.16 ± 4.35 | 10.30 ± 2.62 | 11.26 ± 0.28 | 1.46 ± 1.26 | 12.63 ± 5.43 | 41.43 ± 7.77 |
| 25 | 63.69 ± 10.70 | 19.36 ± 8.72 | 36.71 ± 16.53 | 33.50 ± 8.52 | 42.40 ± 23.65 | 25.61 ± 5.18 | 10.28 ± 1.22 | 19.20 ± 6.40 | 3.66 ± 1.25 | 19.43 ± 6.21 | 48.16 ± 7.16 |
| 50 | 71.60 ± 10.48 | 21.63 ± 10.28 | 50.50 ± 10.21 | 50.03 ± 4.00 | 59.16 ± 14.84 | 30.03 ± 3.35 | 11.73 ± 3.21 | 21.86 ± 5.35 | 5.13 ± 1.20 | 28.46 ± 12.0 | 66.03 ± 8.24 |
| 100 | 76.83 ± 5.01 | 27.00 ± 7.85 | 57.00 ± 10.21 | 56.54 ± 6.03 | 70.36 ± 14.73 | 33.06 ± 1.86 | 14.68 ± 5.02 | 25.61 ± 5.18 | 6.61 ± 0.08 | 38.30 ± 5.63 | 77.36 ± 4.22 |
The statistical significance was calculated from one way ANOVA analysis and level was set to 0.05. Values of all parameters are expressed as mean ± SD of three independent measurements.