Table 2.
The yields, total phenolic content, total flavonoid content, total antioxidant activities, IC50 values and the effects on β-carotene bleaching of A. sieheana.
| Methanol Extract | Essential oil | |
|---|---|---|
| Yield (%) | 5.77 | 1.2 |
| Total phenolic content (mg GAE/g extract) |
15.69 ± 1.2* | - |
| Total flavonoid content (mg QE/g extract) |
11.28 ± 0.1 | |
| Total antioxidant activity (mg AAE/g extract) |
131.73 ± 0.6 | - |
| β-carotene bleaching (I%) | 71.08 ± 1.9 | 75.20 ± 2.5 |
| IC50 (μg/mL) | 87.04 | - |
*Values expressed are mean ± standard deviation of three experiments. Total phenolic content expressed as gallic acid equivalent (GAE), total flavonoid content expressed as quercetin equivalent (QE), total antioxidant activity expressed as ascorbic acid equivalent (AAE).
-: not determined