Table 5.
Antioxidant activity (mg trolox·g−1 DW) and relative standard deviations (RSD) for fresh and dried Navelina, Sanguina, and Salustriana orange peels.
| Navelina Peel (Citrus sinensis L. Osbeck cv. “Navelina”) |
Salustriana Peel (Citrus sinensis L. Osbeck cv. “Salustriana”) |
Sanguina Peel (Citrus x sinensis var. “Sanguina”) |
||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fresh | RSD | Oven 50 °C | RSD | Oven 70 °C | RSD | FD | RSD | Fresh | RSD | Oven 50 °C | RSD | Oven 70 °C | RSD | FD | RSD | Fresh | RSD | Oven 50 °C | RSD | Oven 70 °C | RSD | FD | RSD | |
| DPPH | 44.82 a | (11.94) | 56.30 b | (2.54) | 64.96 c | (4.43) | 71.57 d | (0.84) | 33.62 a | (11.94) | 42.22 b | (2.54) | 47.72 c | (4.52) | 53.68 d | (0.84) | 67.24 a | (11.94) | 80.45 b | (0.95) | 93.38 c | (1.53) | 107.36 d | (0.84) |
| FRAP | 26.89 a | (11.94) | 33.78 b | (2.54) | 42.92 c | (3.58) | 49.49 d | (6.16) | 18.83 a | (11.94) | 23.65 b | (2.54) | 30.04 c | (3.58) | 34.64 d | (6.16) | 38.73 a | (11.94) | 48.64 b | (2.54) | 63.36 c | (0.01) | 71.26 d | (6.16) |
| ABTS | 144.94 a | (2.44) | 213.62 b | (2.65) | 253.35 c | (1.95) | 313.07 d | (0.43) | 122.48 a | (0.56) | 159.08 b | (1.87) | 196.09 c | (0.01) | 239.85 d | (3.23) | 202.69 a | (0.61) | 283.48 b | (0.97) | 364.58 c | (5.54) | 569.23 d | (0.43) |
a, b, c, d: Different letters in the same row denote a significant difference according to the Student-Newman-Keuls test, at p < 0.05. DW—dry weight basis. FD—freeze-dried.