Antioxidant and Antiradical Properties of Selected Flavonoids and Phenolic Compounds
Table 1
The comparison of lipid peroxidation inhibition percentages and ferrous ion (Fe2+) chelating activities of reference antioxidants and some phenolic and flavonoid compounds (10 μg/mL for chelating activity and 20 μg/mL for lipid peroxidation inhibition).
Antioxidant
Fe2+ ions chelating activity with ferrozine reagent
Fe2+ ions chelating activity with bipyridyl reagent
Total antioxidant activity
IC50 (µg/mL)
% activity
IC50 (µg/mL)
% activity
% inhibition
BHA
32.47
27.34
42.03
24.46
96.39
BHT
30.07
34.89
31.98
28.86
63.63
α-Tocopherol
25.73
38.41
12.66
72.53
9.10
Trolox
49.44
21.35
18.56
30.86
93.57
EDTA
—
—
7.32
95.80
—
Malvin
18.54
52.21
14.34
65.73
95.16
ID-8
18.33
54.16
8.80
88.06
97.98
Pelargonin
25.72
39.58
14.30
51.46
93.93
Silychristin
36.78
25.78
24.83
14.20
95.45
Callistephin
34.51
22.73
20.80
33.06
97.58
Oenin
28.95
22.00
26.47
16.40
96.75
Arachidonoyl Dopamine
20.37
50.65
11.08
73.86
51.14
3,4-Dihydroxy-5-methoxybenzoic acid
26.93
36.32
52.37
92.00
17.23
2,4,6-Trihydroxy benzaldehyde
32.16
32.16
17.93
48.00
28.24
The IC50 values were calculated by means of metal chelating and total antioxidant activity graphs from values measured at different concentrations (10–30 µg/mL) of reference antioxidants and the phenolic and flavonoid compounds.
