Table 4.
Concentration of anthocyanins (mg g−1 DW) and antioxidant activity (DPPH, mg TE g−1 DW) of purple and red flesh potatoes. Different letters on the same line mean that the values are significantly different.
| Compound (mg/g DW)/Variety | Vitelotte | Double Fun | Violet Queen | Highland |
|---|---|---|---|---|
| 1 | n.d. | n.d. | n.d. | 0.14 ± 0.00 |
| 2 | 0.66 ± 0.05 a | 0.59 ± 0.02 a | 3.82 ± 0.10 b | n.d. |
| 3 | n.d. | n.d. | n.d. | 1.12 ± 0.01 |
| 4 | n.d. | n.d. | 0.14 ± 0.01 | n.d. |
| 5 | 3.97 ± 0.14 c | 1.98 ± 0.09 b | 0.91 ± 0.09 a | n.d. |
| 6 | n.d. | n.d. | n.d. | 0.22 ± 0.00 |
| 7 | 0.34 ± 0.08 b | 0.21 ± 0.03 a | n.d. | n.d. |
| Total anthocyanins (mg/g) | 4.97 ± 0.17 c | 2.78 ± 0.10 b | 4.87 ± 0.13 c | 1.48 ± 0.01 a |
| DPPH (mg TE/g DW) | 28.81 | 21.67 | 29.87 | 11.19 |
| Flesh Color | Purple | Purple/White | Purple | Red |
1: Pelargonidin 3-p-coumaroylrutinoside-5-glucoside; 2: petunidin 3-p-coumaroylrutinoside-5-glucoside; 3: pelargonidin 3-p-coumaroylrutinoside-5-glucoside; 4: peonidin 3-p-coumaroylrutinoside-5-glucoside; 5: malvidin 3-p-coumaroylrutinoside-5-glucoside; 6: pelargonidin derivative; 7: malvidin 3-feruoylrutinoside-5-glucoside. n.d.: not detected.