Table 8.
Antioxidant activity of bergamot juice. AAE = ascorbic acid equivalent. Results are presented as the mean value ± standard deviation, n = 8, (2016–2017 and 2017–2018 harvest years). *** significance at p < 0.001; ** significance at p < 0.01; * significance at p < 0.05. Means in the same line are distinguished by small letters. Means in the same column are distinguished by capital letters.
| Cultivar | October | November | December | January | February | March | Sign. | |
|---|---|---|---|---|---|---|---|---|
|
DPPH Assay—Juice
(mg AAE/100mL) |
Castagnaro | 380.8 ± 1.16dC | 320.3 ± 2.30eC | 494.9 ± 2.17aA | 431.2 ± 1.11bA | 386.6 ± 2.21cC | 305.6 ± 1.85fC | *** |
| Fantastico | 423.4 ± 2.17bA | 361.7 ± 3.79cB | 340.7 ± 1.70dB | 416.8 ± 2.41bB | 453.3 ± 4.62aB | 450.9 ± 4.23aB | *** | |
| Femminello | 394.3 ± 4.01cB | 420.6 ± 5.11bA | 330.8 ± 3.53dC | 340.0 ± 7.71dC | 478.4 ± 6.59aA | 473.9 ± 4.10aA | *** | |
| Sign. | *** | *** | *** | *** | *** | *** | ||
|
FRAP Assay—Juice
(mM AAE 100/mL) Formol Number (mL NaOH 0.1N/100mL) |
Castagnaro | 45.21 ± 0.96aA | 34.44 ± 1.93cdB | 40.67 ± 0.56bA | 32.66 ± 0.10dB | 35.77 ± 0.47cA | 28.41 ± 0.08eB | *** |
| Fantastico | 45.84 ± 0.39aA | 36.93 ± 0.64bAB | 35.91 ± 0.64bcB | 35.05 ± 0.64cdA | 34.17 ± 0.75dA | 33.65 ± 0.57dA | *** | |
| Femminello | 39.67 ± 0.28aB | 38.04 ± 0.58aA | 35.24 ± 0.66bB | 33.89 ± 0.78AbcB | 31.82 ± 0.76cB | 26.26 ± 1.35dC | *** | |
| Sign. | *** | * | *** | ** | *** | *** |