Research Article
Antioxidant and Anticholinesterase Potential of Six Thymus Species
Table 3
NO radical scavenging effects of Thymus ethanolic extracts, polyphenolic compounds, and reference antioxidant.
| Samples | | N scavenging activity (%) ± SD | | 6.25 μg/mL | 12.5 μg/mL | 25 μg/mL | 50 μg/mL | 100 μg/mL | 200 μg/mL | 400 μg/mL |
| T. longicaulis | 7.29 ± 1.05a | 15.47 ± 1.28a | 29.62 ± 2.75a | 44.17 ± 1.47a | 57.64 ± 1.10a | 72.25 ± 0.11a | 75.01 ± 0.95a | T. praecox subsp. polytrichus | na | 0.23 ± 0.03b | 10.16 ± 0.46b | 26.03 ± 1.52b | 43.02 ± 1.72b | 60.77 ± 0.13b | 68.22 ± 0.03b | T. pulegioides | 0.37 ± 0.05b | 11.64 ± 0.90c | 29.40 ± 1.10a | 44.58 ± 2.19a,g | 58.01 ± 0.37a | 70.40 ± 0.46a | 70.89 ± 1.54c | T. serpyllum subsp. serpyllum | na | na | 2.73 ± 1.46c | 16.38 ± 1.20c | 37.08 ± 1.66c | 53.92 ± 1.26c | 62.38 ± 0.80d | T. striatus | 7.73 ± 0.78a,c | 21.19 ± 0.98d | 28.73 ± 2.16a | 39.76 ± 2.04d | 52.17 ± 1.17d | 63.24 ± 2.19b | 66.12 ± 1.26e | T. vulgaris | 2.16 ± 0.82b | 14.96 ± 1.23a,c | 24.42 ± 0.35d | 39.02 ± 0.72d | 50.52 ± 0.74d | 60.96 ± 1.17b | 63.73 ± 0.55d | Rosmarinic acid | 10.86 ± 3.09c | 47.20 ± 0.23e | 58.40 ± 2.23e | 68.19 ± 0.27e | 73.75 ± 0.33e | 76.23 ± 0.76d | 77.22 ± 0.21f | Luteolin | 1.57 ± 0.21b | 43.10 ± 3.95f | 57.64 ± 2.75e | 64.34 ± 0.62f | 70.95 ± 1.92f | 76.25 ± 1.06d | 80.31 ± 0.30g | Trolox | na | 5.87 ± 1.20g | 20.06 ± 0.02f | 47.39 ± 0.14g | 80.70 ± 0.54g | 83.62 ± 0.62e | 84.86 ± 1.23h |
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na: no activity. Mean values in the same column followed by different letters are significantly different from each other ().
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