Table 2.
Quantification of compounds in PPE of Red Delicious apple skin.
| Compounds | mg/ 100 g DW | % |
|---|---|---|
| Flavan-3-ols: | 729.20 | 44.58 |
| (-)-Epicatechin (monomer) | 250.21 | 15.30 |
| (+)-Catechin (monomer) | 15.59 | 0.95 |
| Procyanidin B1 (dimer) | 16.14 | 0.99 |
| Procyanidin B2 (dimer) | 93.54 | 5.72 |
| Procyanidin C1 (trimer) | 64.75 | 3.96 |
| Trimer 2 | 57.36 | 3.51 |
| Trimer 3 | 6.71 | 0.41 |
| Tetramer 1 | 63.51 | 3.88 |
| Tetramer 2 | 27.68 | 1.69 |
| Tetramer 3 | 31.92 | 1.95 |
| Tetramer 4 | 1.38 | 0.08 |
| Pentamer 1 | 5.15 | 0.31 |
| Pentamer 2 | 8.77 | 0.54 |
| Hexamer | 38.26 | 2.34 |
| Heptamer | 3.18 | 0.19 |
| Unknown 1 | 22.02 | 1.35 |
| Unknown 2 | 23.02 | 1.40 |
| Flavonols | 701.53 | 42.89 |
| Kaempferol pentoside | 0.47 | 0.028 |
| Rutin | 0.23 | 0.014 |
| Quercetin-galactoside | 147.07 | 8.99 |
| Quercetin-glucoside | 159.41 | 9.75 |
| Quercetin-pentoside | 9.37 | 0.57 |
| Quercetin-pentoside | 128.58 | 7.86 |
| Quercetin-ramnoside | 139.06 | 8.50 |
| Ramnetin-pentoside | 117.34 | 7.17 |
| Dihydrochalcones | 189.70 | 11.60 |
| Phloridzin-pentoside | 54.74 | 3.35 |
| Phloridzin | 134.96 | 8.25 |
| Phenolic acids: Chlorogenic acid | 11.50 | 0.70 |
| Anthocyanidins: Cyanidin glucoside | 3.64 | 0.22 |
| Total PP | 1635.60 | 100.00 |