Table 1.
HPLC analysis of anthocyanins, hydroxycinnamic acids and flavonols present in the pomace of V. meridionale S.a.
|
Peak no |
tR (min) |
% peak area |
Phenolic compound Concentration as corresponding standard (mg/100 g FW) (mg/100 g DW) |
||
|---|---|---|---|---|---|
| Anthocyanins | |||||
| 1 | 12.0 | 5.6 | Delphinidin-3-hexoside | 38.4 ± 17.3 | 64.1 ± 28.9 |
| 2 | 13.3 | 49.6 | Cyanidin-3-galactoside | 357.7 ± 75.5 | 596.2 ± 125.9 |
| 3 | 13.5 | 4.1 | Delphinidin-3-pentoside | 34.7 ± 13.9 | 57.9 ± 23.2 |
| 4 | 14.1 | 1.2 | Cyanidin-3-glucoside | 10.1 ± 1.9 | 16.9 ± 3.2 |
| 5 | 14.8 | 39.5 | Cyanidin-3-arabinoside | 306.6 ± 60.4 | 511.0 ± 100.7 |
| Total | 747.6 ± 167.5 | 1245.9 ± 279.2 | |||
| 1 | 11.0 | 77.0 | Chlorogenic acid isomer 1 | 188.3 ± 62.3 | 313.8 ± 103.8 |
| 2 | 11.6 | 1.5 | Chlorogenic acid isomer 2 | 4.0 ± 2.5 | 6.6 ± 4.2 |
| 3 | 17.2 | 1.1 | Caffeoyl methyl quinate | 1.4 ± 0.6 | 2.4 ± 0.9 |
| 4 | 18.8 | 15.0 | Caffeic acid derivative | 26.8 ± 3.6 | 44.6 ± 5.9 |
| 5 | 24.2 | 1.0 | Caffeic acid derivative isomer 2 | 8.8 ± 1.0 | 14.6 ± 2.6 |
| Total | 229.2 ± 68.4 | 382.1 ± 114.1 | |||
| Flavonols | |||||
| 1 | 19.7 | 47.4 | Quercetin hexoside | 161.2 ± 83.1 | 268.7 ± 138.5 |
| 2 | 20.9 | 3.9 | Quercetin pentoside | 14.2 ± 5.9 | 23.7 ± 9.8 |
| 3 | 21.4 | 10.0 | Quercetin pentoside | 38.9 ± 21.5 | 64.9 ± 35.8 |
| 4 | 21.9 | 21.1 | Quercetin pentoside | 58.8 ± 25.4 | 98 ± 42.4 |
| 5 | 22.4 | 9.4 | Quercetin rhamnoside | 36.9 ± 13.8 | 61.5 ± 23 |
| 6 | 24.9 | 8.2 | Quercetin hydroxymethylglutaryl-α-rhamnoside | 24.9 ± 15.1 | 41.5 ± 25.1 |
| Total | 335.0 ± 139.5 | 558.3 ± 232.5 | |||
a
Results are expressed as mean ± SD (n = 4).