Table 8.
Antioxidant activity measured with DPPH assay in Limoncella, Red Delicious, Golden Delicious, and Annurca upon in vitro digestion of apple samples (flesh, peel, and whole fruit). Each value represents the mean ± SD of three replicates. For each line, different letters indicate significantly different values (p < 0.05) according to Tukey’s test.
| Apple Samples | SDP | SCP | TOTAL |
|---|---|---|---|
| TEAC (mmol trolox/kg DW) | |||
| Annurca | |||
| Whole fruit | 4.480 ± 0.71 a | 7.854 ±0.23 b | 12.334 ± 0.67 c |
| Flesh | 3.920 ± 0.12 a | 7.943 ± 0.23 b | 11.863 ± 0.24 c |
| Peel | 9.125 ± 0.67 a | 15.580 ± 0.21 b | 24.705 ± 1.76 c |
| Golden Delicious | |||
| Whole fruit | 3.610 ± 0.72 a | 5.861 ± 1.33 b | 9.471 ± 0.56 c |
| Flesh | 3.152 ± 0.65 a | 5.438 ± 0.43 b | 8.590 ± 0.12 c |
| Peel | 7.876 ± 0.11 a | 10.785 ± 0.32 b | 18.661 ± 0.72 c |
| Limoncella | |||
| Whole fruit | 2.720 ± 0.81 a | 12.653 ± 1.76 b | 15.373 ± 1.11 c |
| Flesh | 4.127 ± 0.67 a | 9.654 ± 1.56 b | 13.781 ± 0.88 c |
| Peel | 9.873 ± 1.77 a | 18.743 ± 0.99 b | 28.616 ± 1.61 c |
| Red Delicious | |||
| Whole fruit | 4.012 ± 0.71 a | 4.874 ± 0.12 b | 8.886 ± 0.91 c |
| Flesh | 3.580 ± 0.61 a | 4.870 ± 0.93 b | 8.450 ± 0.45 c |
| Peel | 8.010 ± 0.65 a | 13.650 ± 0.56 b | 21.660 ± 1.41 c |