Table 1.
Identification and quantification of phenolic compounds in honeydew melon seeds using reversed phase HPLC-DAD. Peaks 1–5 were identified in water extract and peaks 5–13 in water-methanol extract.
| Peak | Retention Time (min) | Identity | HPLC-DAD λmax (nm) | Amount (mg/100 g) | Reference |
|---|---|---|---|---|---|
| 1 | 1.8 | Gallic acid | 271 | 6.667 | Standard |
| 2 | 2.1 | Gallic acid derivative | 270 | 0.982 | Santos et al. [10] |
| 3 | 4.8 | Hydroxybenzoic acid derivative | 261, 278 | 2.18 | Santos et al. [10] |
| 4 | 5.7 | Catechin derivative | 280 | 5.42 | Santos et al. [10] |
| 5 | 6.8 | Caffeic acid | 298, 323 | 46.3 | Standard |
| 5 | 6.8 | Caffeic acid | 298, 323 | 66.0 | Standard |
| 6 | 1.4 | Vanilic acid derivative | 227, 258 | 1.02 | Santos et al. [10] |
| 7 | 1.6 | Vanilic acid derivative | 226, 259 | 0.455 | Santos et al. [10] |
| 8 | 2.8 | Ellagitanin | 232, 270 | 0.433 | Santos et al. [10] |
| 9 | 8.5 | Quercetin-3-rutinoside | 254, 355 | 3.91 | Standard |
| 10 | 9.2 | Catechin | 280 | 4.33 | Standard |
| 11 | 11.8 | Syringic acid derivative | 284 | 8.65 | Santos et al. [10] |
| 12 | 13.5 | Ellagic acid derivative | 286, 320 | 1.24 | Santos et al. [10] |
| 13 | 14.3 | Ellagic acid | 254, 368 | 6.52 | Standard |
| Total Amounts | Water | 81.249 | |||
| Mixture | 72.858 | ||||
| Methanol | 12.456 |