Entry
Compound No.
Inhibition %
1
Vit. C
71.3
2
2
79.3
3
3
39
4
4
52
5
5
77.5
6
6
66.5
7
7
51.0
8
8
55.2
9
9
47.1
10
10
76
11
11
79.6
12
12
51
13
13
22
14
16
26.3
15
17
15.6
16
18
79
17
20
77.1
18
21
82.8
19
22
80.5
Table 1:
Free radical scavenging capacities of naphthoquinone derivatives
2-22
measured in NBT assay at a dose 1000 μg/mL.