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Mean scavenging concentrations of (EC50) of essential oil of Alpinia calcarata rhizomes in DPPH free radical scavenging assay
| Sample | EC50 (μg/mL) |
|---|---|
| EO | 45.8 ± 0.4a |
| BHT | 8.4 ± 0.2b |
Values are expressed as mean ± SE. The values marked with the different letters (a and b) are significantly (P ≤ 0.05) different from each other. BHT, butylated hydroxyl toluene; SE, standard error.
