Table 5. ABTS radical scavenging effects of essential oils extracted from Citrus × natsudaidai peels according to ripening stages
| Immaturity | Maturity | Overripe | Ascorbic acid |
ABTs EC50 (mg/mL) | 22.43 ± 0.45 | 26.82 ± 0.48 | 20.43 ± 0.37 | 0.066 ± 0.001 |
ABTS: 2,2′-azino-bis(3-ethylbenz-thiazoline-6-sulfonic acid).