| Sample | 2,2'-azino-bis(3-ethyl benzthiazoline-6-sulfonic acid) (ABTS) | |
| Absorbance | *ABTS•+ scavenging (%) | |
| Control of ABTS | 0.508 | - |
| **Ascorbic-acid | 0.056 | 89.0% |
| Cinnamon oil | 0.093 | 81.7% |
| Lemon oil | 0.398 | 21.6% |