Research Article
Antioxidant and Anticholinesterase Potential of Six Thymus Species
Table 4
Ferric reducing power of Thymus ethanolic extracts, polyphenolic compounds, and reference antioxidant.
| Samples | Absorbance at 700 nm ± SD | 0.78 μg/mL | 1.56 μg/mL | 3.13 μg/mL | 6.25 μg/mL | 12.5 μg/mL | 25 μg/mL | 50 μg/mL |
| T. longicaulis | 0.065 ± 0.001a,b | 0.105 ± 0.001a,b | 0.172 ± 0.003a,b | 0.301 ± 0.001a | 0.534 ± 0.008a | 0.946 ± 0.011a | 1.619 ± 0.008a | T. praecox subsp. polytrichus | 0.060 ± 0.004a,c | 0.090 ± 0.004a,c | 0.147 ± 0.015a | 0.242 ± 0.019b | 0.432 ± 0.018b | 0.782 ± 0.019b | 1.340 ± 0.014b | T. pulegioides | 0.070 ± 0.001b | 0.109 ± 0.001b | 0.179 ± 0.002b | 0.319 ± 0.005c | 0.547 ± 0.004a | 0.961 ± 0.023a | 1.541 ± 0.029c | T. serpyllum subsp. serpyllum | 0.060 ± 0.006a,c | 0.090 ± 0.007a,c | 0.147 ± 0.015a | 0.254 ± 0.019b | 0.442 ± 0.023b | 0.809 ± 0.008b | 1.359 ± 0.064b | T. striatus | 0.055 ± 0.001c | 0.085 ± 0.004c | 0.143 ± 0.006a | 0.249 ± 0.006d | 0.447 ± 0.010b | 0.795 ± 0.017b | 1.439 ± 0.017d | T. vulgaris | 0.062 ± 0.001a,b,c | 0.094 ± 0.003a,b,c | 0.149 ± 0.005a,b | 0.254 ± 0.001b | 0.464 ± 0.014b | 0.797 ± 0.001b | 1.376 ± 0.005b,d | Rosmarinic acid | 0.173 ± 0.005d | 0.321 ± 0.013d | 0.581 ± 0.015c | 1.055 ± 0.028e | 1.777 ± 0.065c | 3.251 ± 0.086c | 3.584 ± 0.010e | Luteolin | 0.142 ± 0.006e | 0.228 ± 0.008e | 0.390 ± 0.012d | 0.641 ± 0.037f | 1.132 ± 0.026d | 1.782 ± 0.045d | 3.568 ± 0.038e | Trolox | 0.089 ± 0.002f | 0.148 ± 0.007f | 0.240 ± 0.016e | 0.432 ± 0.018g | 0.903 ± 0.025e | 1.496 ± 0.021e | 2.941 ± 0.001f |
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Mean values in the same column followed by different letters are significantly different from each other ().
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