Table 2.
The content of phenolic acids and flavonols in pumpkin varieties.
| Cultivars | Bambino | Hokkaido | Gomez | Melonowa Żółta | Porcelain Doll | Blue Kuri | Buttercup | Jumbo Pink Banana | Jarrahdale | Marina di Chioggia | Green Hubbard | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Phenolic acids (mg/100g dm) | Gallic acid | 2.58 ± 0.01 | 8.05 ± 0.03 | 6.18 ± 0.09 | 18.90 ± 0.18 | 11.44 ± 0.17 | 8.88 ± 0.08 | 14.22 ± 0.26 | 5.93 ± 0.10 | 12.01 ± 0.18 | 15.30 ± 0.08 | 6.90 ± 0.05 |
| Protocatechuic acid | 5.09 ± 0.02 | 17.38 ± 0.03 | 8.88 ± 0.04 | 47.89 ± 0.16 | 42.13 ± 0.12 | 18.31 ± 0.06 | 20.02 ± 0.16 | 36.81 ± 0.11 | 6.99 ± 0.05 | 22.41 ± 0.06 | 29.82 ± 0.32 | |
| 4-Hydroxy-benzoic acid | 10.04 ± 0.02 | 18.01 ± 0.23 | 7.73 ± 0.03 a | 13.2 ± 0.10 | 33.12 ± 0.18 | 6.05 ± 0.02 | 15.36 ± 0.10 | 7.72 ± 0.03 a | 19.13 ± 0.14 | 22.95 ± 0.09 | 4.95 ± 0.03 | |
| Vanillic acid | 8.81 ± 0.03 | 6.88 ± 0.04 | 9.11 ± 0.02 | 2.03 ± 0.02 | 6.54 ± 0.03 | 7.04 ± 0.13 | 4.20 ± 0.06 | 3.08 ± 0.07 | 0.95 ± 0.01 | 6.34 ± 0.02 a | 6.41 ± 0.01 a | |
| Chlorogenic acid | 6.85 ± 0.06 | 5.12 ± 0.03 | 1.39 ± 0.21 | 6.69 ± 0.01 | 3.06 ± 0.02 a | 5.33 ± 0.01 | 4.03 ± 0.06 | 1.23 ± 0.01 | 1.94 ± 0.02 | 2.45 ± 0.01 | 3.11 ± 0.01 a | |
| Caffeic acid | 17.75 ± 0.04 | 48.92 ± 0.02 | 62.85 ± 0.03 a | 126.78 ± 0.05 | 133.42 ± 0.01 | 42.38 ± 0.01 | 36.39 ± 0.01 | 115.19 ± 0.21 | 62.70 ± 0.58 a | 51.43 ± 0.05 | 18.97 ± 0.08 | |
| p-coumaric acid | n.d | 3.47 ± 0.01 | n.d | 0.79 ± 0.01 | 1.12 ± 0.01 | 0.81 ± 0.04 | 0.90 ± 0.01 | 2.50 ± 0.01 | 0.20 ± 0.01 | 0.54 ± 0.01 | 0.40 ± 0.02 | |
| Ferulic acid | 13.60 ± 0.03 | 28.90 ± 0.02 | 9.92 ± 0.03 | 33.50 ± 0.02 | 18.07 ± 0.06 | 18.96 ± 0.1 | 9.70 ± 0.01 | 16.00 ± 0.07 | 24.49 ± 0.03 | 19.96 ± 0.08 | 6.87 ± 0.02 | |
| Sinapic acid | 32.00 ± 0.08 | 19.08 ± 0.02 | n.d | 14.91 ± 0.01 | n.d | 10.01 ± 0.02 | n.d | 22.94 ± 0.02 | n.d | 15.29 ± 0.08 | 21.58 ± 0.02 | |
| Flavonols (mg/100 g dm) | Rutin | 51.92 ± 0.03 | 8.07 ± 0.01 | 19.90 ± 0.02 | 30.28 ± 0.06 | 15.92 ± 0.01 | 12.10 ± 0.03 a | 21.59 ± 0.02 | 14.05 ± 0.56 | 6.30 ± 0.02 | 5.09 ± 0.01 | 12.10 ± 0.02 a |
| Kaempferol | n.d | 28.94 ± 0.07 | 13.10 ± 0.02 | 20.79 ± 0.01 | n.d | 15.09 ± 0.01 | n.d | 7.11 ± 0.02 | n.d | 13.02 ± 0.05 | 6.20 ± 0.02 | |
| Isoquercetin | 5.54 ± 0.02 | 5.69 ± 0.01 | 1.63 ± 0.01 | 4.11 ± 0.01 | 9.01 ± 0.09 | 6.04 ± 0.03 | n.d | 3.86 ± 0.01 | 5.33 ± 0.01 | 4.68 ± 0.17 | n.d | |
| Astragalin | 28.03 ± 0.11 | n.d | n.d | 26.82 ± 0.02 | 11.39 ± 0.03 | 15.35 ± 0.03 | n.d | n.d | 5.40 ± 0.01 | 12.07 ± 0.03 | n.d | |
| Myricetin | 9.04 ± 0.01 | 1.99 ± 0.02 | n.d | n.d | 1.74 ± 0.01 | 6.23 ± 0.01 | 4.00 ± 0.02 | 3.83 ± 0.03 | n.d | n.d | 5.04 ± 0.04 | |
| Quercetin | 6.97 ± 0.07 | 2.55 ± 0.02 | 26.54 ± 0.02 | 15.69 ± 0.07 | 11.03 ± 0.05 | 18.81 ± 0.07 | 5.09 ± 0.01 | n.d | 13.31 ± 0.02 | 8.10 ± 0.01 | 15.21 ± 0.02 |
a means in the same verse followed by the same letter do not significantly differ (p < 0.05) in terms of analysed variables, dm—dry mass, n.d—not detected, the results are expressed as the mean values ± standard deviation of the triplicate samples.