Table 3 Antioxidant activity of 11 Thymus species based on DPPH and β-carotene-linoleic acid model systems.
From: Polyphenolic and molecular variation in Thymus species using HPLC and SRAP analyses
Species | DPPH scavenging (IC50) | Inhibition of β-carotene bleaching (%) | |||
|---|---|---|---|---|---|
50 ppm | 100 ppm | 300 pmm | 500 ppm | ||
T. carmanicus | 392.3 ± 0.1 | 4.14 ± 0.03 | 11.45 ± 0.09 | 16.54 ± 0.05 | 22.28 ± 0.09 |
T. daenensis | 371.4 ± 0.1 | 4.43 ± 0.02 | 10.88 ± 0.06 | 16.36 ± 0.04 | 21.81 ± 0.07 |
T. fallax | 369.8 ± 0.1 | 4.56 ± 0.01 | 11.81 ± 0.05 | 17.44 ± 0.06 | 22.78 ± 0.05 |
T. fedtschenkoi | 351.4 ± 0.1 | 4.67 ± 0.02 | 13.31 ± 0.04 | 18.54 ± 0.05 | 24.49 ± 0.01 |
T. kotschyanus | 355.2 ± 0.1 | 5.66 ± 0.01 | 13.26 ± 0.06 | 18.51 ± 0.08 | 34.48 ± 0.06 |
T. migricus | 411.7 ± 0.1 | 4.39 ± 0.03 | 7.74 ± 0.08 | 11.60 ± 0.06 | 19.03 ± 0.04 |
T. pubescens | 679.3 ± 0.1 | 1.23 ± 0.02 | 1.59 ± 0.05 | 2.15 ± 0.07 | 5.50 ± 0.04 |
T. serpyllum | 548.9 ± 0.2 | 1.99 ± 0.03 | 6.27 ± 0.09 | 12.24 ± 0.04 | 27.42 ± 0.06 |
T. transcaspicus | 473.1 ± 0.1 | 2.85 ± 0.03 | 7.61 ± 0.07 | 10.91 ± 0.09 | 18.25 ± 0.08 |
T. trautvetteri | 373.8 ± 0.1 | 4.55 ± 0.02 | 11.23 ± 0.05 | 16.38 ± 0.07 | 22.20 ± 0.06 |
T. vulgaris | 273.8 ± 0.1 | 7.07 ± 0.04 | 18.49 ± 0.05 | 23.68 ± 0.06 | 43.29 ± 0.07 |
BHT | 172.4 | 8.21 | 22.6 | 30.98 | 51.34 |
