Antioxidant and Antiradical Properties of Selected Flavonoids and Phenolic Compounds
Table 2
Free radical scavenging activities (%) of reference antioxidants and selected phenolic and flavonoid compounds at 10 µg/mL concentration for ABTS and DMPD and at 20 µg/mL for and DPPH∙.
Antioxidant
IC50 (µg/mL)
% activity
IC50 (µg/mL)
% activity
IC50 (µg/mL)
% activity
IC50 (µg/mL)
% activity
BHA
8.09
98.64
15.34
15.34
3.60
99.80
23.37
41.06
BHT
11.89
96.28
15.26
15.26
6.04
99.80
15.02
64.60
α-Tocopherol
17.25
93.85
15.14
64.14
8.47
70.63
23.21
42.00
Trolox
14.13
95.21
13.90
64.57
7.39
83.72
23.21
44.00
Malvin
21.36
92.21
16.47
59.85
7.20
81.72
30.97
33.06
ID-8
536.41
93.85
17.56
60.28
6.80
82.63
34.73
30.66
Pelargonin
67.73
91.50
15.86
65.85
6.71
93.54
14.13
63.40
Silychristin
86.16
91.07
17.62
61.71
6.71
89.18
18.19
51.86
Callistephin
20.64
95.57
12.80
72.71
5.54
99.72
19.70
49.60
Oenin
16.72
95.35
15.46
65.85
6.60
99.72
16.70
56.40
Arachidonoyl dopamine
84.10
98.50
18.02
59.71
12.54
42.00
23.95
39.40
3,4-Dihydroxy-5-methoxybenzoic acid
10.69
98.64
17.80
64.42
6.05
99.80
11.47
73.40
2,4,6-Trihydroxy benzaldehyde
28.86
96.78
17.93
70.00
5.28
99.72
16.54
56.80
The IC50 values were calculated by means of radical scavenging activity graphs from the values measured at different concentrations (10–30 µg/mL) of reference antioxidants and some phenolic and flavonoid compounds.