Table 5.
Scavenging concentration (SC50) (%, v/v) and inhibitory concentration (IC50) (%, v/v) for the antioxidant, anti-inflammatory, and antityrosinase activities of ‘Mato Peiyu’ leaf essential oil.
| Scavenging Activity/Inhibitory Activity | SD-EO | SFME-EO | Tocopherol | Bisabolol | Ascorbic Acid |
|---|---|---|---|---|---|
| DPPH radical | 0.752 ± 0.025 a | 0.876 ± 0.061 b | 0.0004 ± 0.0000 c | - | - |
| β-Carotene/linoleic acid | 0.147 ± 0.011 a | 0.086 ± 0.005 b | 0.060 ± 0.001 c | - | - |
| NO radical | 0.349 ± 0.010 a | 0.334 ± 0.003 a | 0.105 ± 0.005 b | - | - |
| 5-LOX | 0.039 ± 0.004 a | 0.034 ± 0.001 a | - | 0.008 ± 0.000 b | - |
| Tyrosinase | 0.771 ± 0.056 a | 0.882 ± 0.056 b | - | - | 0.041 ± 0.000 c |
SC50: the concentration of a sample required for scavenging 50% of the free radicals in the diphenyl-1-picrylhydrazyl (DPPH) radical and nitric oxide (NO) radical scavenging assays. IC50: the concentration of a sample that resulted in 50% inhibition of the bioactivity in the β-carotene-linoleic acid, 5-lipoxygenase (5-LOX), and tyrosinase inhibitory activity assays. α-Tocopherol, β-bisabolol, and l-ascorbic acid were positive controls. Data are presented as the mean ± standard deviation based on triplicate determination. Means in the same row followed by different lowercase letters are significantly different (p < 0.05).