Table I. HPLC analysis of flavonoid in fruits of apple cv Red Delicious and cv Golden Delicious.
Fruit stage was the same as indicated in Figure 6 as follows: FTI, 2 weeks after pollination (WAP); FTII, 6 WAP; FTIII, 15 WAP; FTIV, 20 WAP; FTV, 24 WAP. N/D indicates that a peak was not detected, and Tr indicates that the peak was present but its level was too low. All data correspond to mean values of three biological replicates.
| Cultivar | Skin Color | Stage | Flavonol |
Proanthocyanidin |
Anthocyanidin |
|||
| Kaempferol | Quercetin | Catechin | Epicatechin | Pelargonidin | Cyanidin | |||
| μg g−1 | ||||||||
| Red Delicious | Red | FTI | 24.8 | 958.5 | 0.8 | 0.5 | N/D | 6.5 |
| FTII | 10.7 | 705.0 | 0.8 | 1.0 | N/D | 8.3 | ||
| FTIII | 1.0 | 127.5 | 6.6 | 24.0 | N/D | 5.6 | ||
| FTIV | Tr | 69.3 | 1.6 | 10.2 | N/D | 7.5 | ||
| FTV | Tr | 41.9 | 1.0 | 6.5 | N/D | 9.5 | ||
| Golden Delicious | Yellow-green | FTI | 28.5 | 781.2 | 0.5 | 0.1 | N/D | 4.9 |
| FTII | 9.5 | 428.4 | 0.4 | 0.3 | N/D | 5.8 | ||
| FTIII | 0.9 | 113.1 | 1.2 | 14.9 | N/D | 2.9 | ||
| FTIV | Tr | 115.7 | 0.7 | 6.2 | N/D | 2.2 | ||
| FTV | 0.8 | 86.0 | 0.3 | 4.8 | N/D | 2.8 | ||