Table 2. Extract yield and antioxidant activity of plant extracts.
Plant name |
Extract yield (% w/w) |
% DPPH Inhibition |
IC50* |
||||
0.01 µg/mL |
0.1 µg/mL |
0.5 µg/mL |
1.0 µg/mL |
||||
01. |
Curcuma zedoaria |
15.43 |
1.60 ± 0.09 |
10.18 ± 0.41 |
15.81 ± 2.30 |
33.64 ± 0.50 |
>1000 |
02. |
Aegle marmelos |
17.04 |
0.42 ± 0.13 |
1.39 ± 0.39 |
23.72 ± 0.83 |
26.35 ± 0.39 |
>1000 |
03. |
Piper betle |
12.96 |
3.64 ± 1.27 |
32.36 ± 1.94 |
57.45 ± 1.42 |
70.18 ± 8.36 |
323.58 ± 65.58 |
04. |
Smilax zeylanica |
14.61 |
5.17 ± 0.42 |
13.68 ± 0.64 |
29.58 ± 0.36 |
49.14 ± 0.50 |
>1000 |
05. |
Vitex negundo |
17.98 |
2.54 ± 1.55 |
4.24 ± 3.15 |
17.80 ± 3.19 |
33.90 ± 1.20 |
>1000 |
06. |
Artocarpus lakoocha |
12.43 |
11.49 ± 5.62 |
32.18 ± 1.93 |
60.92 ± 7.35 |
71.26 ± 3.78 |
258.98 ± 99.34 |
07. |
Dillenia indica |
16.2 |
6.88 ± 0.27 |
38.62 ± 2.24 |
56.26 ± 1.93 |
69.49 ± 0.68 |
282.45 ± 26.57 |
08. |
Cinnamomum tamala |
11.45 |
29.52 ± 0.12 |
55.97 ± 0.06 |
83.55 ± 0.00 |
93.55 ± 0.58 |
45.87 ± 0.96 |
09. |
Camellia sinensis |
9.82 |
32.78 ± 0.21 |
72.86 ± 1.08 |
91.02 ± 0.78 |
94.36 ± 0.59 |
24.24 ± 1.58 |
10. |
Azadirachta indica |
13.08 |
5.22 ± 0.11 |
5.80 ± 0.30 |
19.92 ± 1.86 |
22.05 ± 1.50 |
>1000 |
11. |
Phyllanthus emblica |
19.68 |
4.20 ± 0.13 |
62.24 ± 0.30 |
89.86 ± 0.77 |
91.26 ± 0.78 |
62.12 ± 21.73 |
12. |
Calotropis gigantea |
4.68 |
0.36 ± 0.18 |
14.42 ± 0.55 |
14.96 ± 0.01 |
15.69 ± 0.71 |
>1000 |
13. |
Averrhoa carambola |
18.54 |
12.44 ± 0.06 |
13.14 ± 0.04 |
38.73 ± 0.22 |
57.74 ± 0.30 |
731.92 ± 85.59 |
14. |
Terminalia bellirica |
17.44 |
10.58 ± 0.25 |
59.18 ± 0.84 |
88.87 ± 0.80 |
93.32 ± 0.11 |
56.84 ± 1.59 |
15. |
Curcuma longa |
5.44 |
9.03 ± 1.83 |
59.03 ±16.93 |
64.58 ± 0.41 |
88.89 ± 3.86 |
107.12 ± 41.50 |
16. |
Terminalia chebula |
13.08 |
17.20 ± 1.79 |
83.44 ± 0.10 |
84.08 ± 1.20 |
85.35 ± 1.26 |
38.54 ± 0.46 |
17. |
Manilkara zapota |
4.92 |
9.26 ± 0.67 |
37.04 ± 3.81 |
62.04 ± 4.76 |
71.30 ± 3.58 |
239.93 ± 25.73 |
18. |
Leucas aspera |
15.28 |
2.78 ± 1.70 |
7.41 ± 1.45 |
9.26 ± 0.52 |
47.22 ± 0.77 |
>1000 |
19. |
Morus nigra |
16.44 |
17.29 ± 1.89 |
20.30 ± 1.21 |
32.33 ± 2.23 |
36.09 ± 0.06 |
>1000 |
20 |
Vitamin C (positive control) |
|
52.17 ± 0.53 |
93.09 ± 0.44 |
93.86 ± 0.19 |
94.11 ± 0.71 |
7.44 ± 0.39 |
*IC50 (the half-maximal inhibitory concentration). Values are expressed as mean ± SD (three replication).