Research Article

Characterization of Bioactive Compounds in Tunisian Bitter Orange (Citrus aurantium L.) Peel and Juice and Determination of Their Antioxidant Activities

Table 3

Antioxidant activities of bitter orange peel and juice methanolic extractsA.

Total antioxidant capacity
(mg GAE/g FW: peel)
(mg GAE/L: juice)
DPPH
(IC50, µg mL−1: peel)
(% : juice)
β-Carotene bleaching
(IC50, mg mL−1: peel)
(% : juice)
Reducing power
(EC50, mg mL−1: peel)

Peel5.23 ± 0.05190 ± 0.015.81 ± 0.031.88 ± 0.05
Juice823.13 ± 17.1897.05 ± 0.3815.92 ± 0.66

AValues are given as mean ± SD ( ). —: not detected.