SI no Sample Concentration(µg/ml) % inhibition IC50(µg/ml) 1 Ascorbic acid 20 18.30 ± 0.38   40 42.92 ± 0.68 50.58 60 57.72 ± 0.09 ±0.149 80 84.05 ± 0.08   100 90.80 ± 0.4   2 AIEE 25 27.97 ± 1.06   50 38.15 ± 0.52   75 52.06 ± 0.04 68.75 100 67.26 ± 0.47 ±0.52 125 80.59 ± 0.49   3 AIAE 25 24.88 ± 0.34   50 38.82 ± 0.18   75 47.14 ± 0.59 74.83 100 63.48 ± 0.29 ±0.574 125 76.02 ± 0.30   4 WSEE 50 21.07 ± 0.70   75 37.17 ± 0.24   100 54.26 ± 0.42 94.28 125 69.73 ± 0.24 ±0.44 150 86.49 ± 0.19   5 WSAE 50 28.04 ± 0.50   75 42.32 ± 0.05   100 56.33 ± 0.38 88.79 125 70.41 ± 0.41 ±0.56 150 84.48 ± 0.33

Table 3: Free radical scavenging activity of the extracts by DPPH assay Free radical scavenging activity of AIEE, AIAE, WSEE and WSAE by DPPH method BHT: Butyl hydroxyl toluene; AIEE: Azadirachta indica ethanolic extract; AIAE: Azadirachta indica aqueous extract; WSEE: Withania somnifera ethanolic extract; WSEE: Withania somnifera aqueous extract.