Table 3.
Chromatographic and mass-spectral-data characteristics and tentative identification of phenolic compounds in extracts obtained from olive pomace samples.
| Peak | Rt (min) | λmax (nm) | Molecular Ion [M-H] (m/z) |
MS 2 (m/z) | MS 3 (m/z) | Tentative Identification |
|---|---|---|---|---|---|---|
| 1 | 4.26 | 277 | 315 | Hydroxytyrosol-1-β-glucoside | ||
| 2 | 5.38 | 281 | 153 | 123(100) | Hydroxytyrosol | |
| 3 | 7.86 | 220, 277 | 137 | Tyrosol | ||
| 4 | 11.93 | 278, 324 | 753 | 639(100) | 621(100), 529(57), 487(62), 459(10) | β-Hydroxyverbascoside isomer 1 |
| 5 | 12.36 | 282, 321 | 753 | 639(100) | 621(100), 529(6) | β-Hydroxyverbascoside isomer 2 |
| 6 | 16.99 | 292, 329 | 737 | 623(100) | 461(100) | Verbascoside |
| 7 | 18.96 | 234, 283, 326 | 707 | 593(100) | 447(52), 285(100) | Luteolin-7-O-rutinoside |
| 8 | 19.32 | 234, 284, 329 | 815 | 701(100) | 377(100), 307(41), 275(29) | Oleuropein-O-hexoside |
| 9 | 19.7 | 236, 285, 324 | 737 | 623(100) | 461(100) | Isoverbascoside |
| 10 | 22.5 | 239, 281, 323 | 779 | 665(100) | 623(100), 503(32), 461(49), 443(24) | Acetylverbascoside derivative |