S.No Concentration In (3.3μg/ml ) Absorbance % Reduction IC50 Value (μg/ml)
1. 10 0.277 43.46 55
2. 20 0.270 44.89
3. 30 0.265 45.91
4. 40 0.254 48.16
5. 50 0.249 49.18
6. 60 0.241 50.81
7. 70 0.217 55.71
8. 80 0.190 61.22
9. 90 0.177 63.87
10. 100 0.164 66.53
Table 8: Antioxidant Activity of Root Extract of T. officinale Absorbance of the sample at 517nm Absorbance of Control = 0.490.