Antioxidant and Anticholinesterase Potential of Six Thymus Species
Table 7
Comparative overview of IC50 values as well as total antioxidant capacities of Thymus ethanolic extracts, polyphenolic compounds, and reference antioxidants.
Samples
IC50 (μg/mL)
Total antioxidant
capacity
(mg AAE/g)
DPPH radical scavenging activity
NO radical scavenging activity
Reducing power
Iron chelating activity
Inhibition of lipid peroxidation
T. longicaulis
3.01 ± 0.02
71.57 ± 4.85
11.84 ± 0.11
271.85 ± 7.94
34.30 ± 7.37
293.82 ± 11.64
T. praecox subsp. polytrichus
3.41 ± 0.16
139.04 ± 5.69
15.10 ± 0.64
388.77 ± 3.28
78.74 ± 7.08
287.72 ± 12.52
T. pulegioides
4.18 ± 0.02
69.77 ± 4.38
11.39 ± 0.07
277.10 ± 1.03
34.83 ± 7.36
251.26 ± 0.75
T. serpyllum subsp. serpyllum
6.01 ± 0.44
176.59 ± 8.09
14.55 ± 0.57
342.04 ± 6.89
80.00 ± 9.93
238.16 ± 2.50
T. striatus
4.06 ± 0.04
91.09 ± 5.34
14.68 ± 0.38
333.14 ± 4.39
63.01 ± 7.44
276.04 ± 3.38
T. vulgaris
5.60 ± 0.07
97.93 ± 2.93
14.41 ± 0.19
125.91 ± 2.50
69.60 ± 5.14
257.87 ± 5.76
Rosmarinic acid
0.66 ± 0.03
15.67 ± 0.44
2.67 ± 0.10
na
21.07 ± 1.63
598.34 ± 8.26
Luteolin
0.73 ± 0.11
18.31 ± 1.02
4.51 ± 0.07
na
2.03 ± 0.23
67.72 ± 3.00
Trolox
1.67 ± 0.09
53.91 ± 0.13
6.64 ± 0.36
na
—
307.89 ± 2.00
EDTA
—
—
—
5.34 ± 0.10
—
—
Results are calculated for sample concentration of 100 μg/mL. —: not tested; na: no activity. Mean values in the same column followed by different letters are significantly different from each other ().
