Treatment | Concentration (μg/ml) | Absorbance at 255 nm | % Inhibition |
---|---|---|---|
Ink extract | 50 | 0.408 | 10.1 |
 | 100 | 0.253 | 44.2 |
 | 250 | 0.182 | 59.9 |
 | 500 | 0.034 | 92.5 |
 | 1000 | 0.009 | 98.01 |
Positive control (diclofenac sodium) | 50 | 0.32 | 29.51 |
 | 100 | 0.236 | 48.01 |
 | 250 | 0.176 | 61.2 |
 | 500 | 0.027 | 94.05 |
 | 1000 | 0.006 | 98.6 |
Negative control (distilled water) | – | 0.454 | – |