| Compounds | [M-H]+ | Main fragments | Area | References | () | ESI-MS | P | M |
| Phenolic alcohols | | | | | | Tyrosol | 139 | | ID | ID |
[5, 14–19] | Hydroxytyrosol | 155 | | ID | ID | [5, 14–16, 20–22] | Phenolic acids | | | | | | Vanillic acid | 169 | | ID | ID | [15, 17, 19, 22–24] | Caffeic acid | 181 | | ID | NI | [4, 5, 13, 14, 16, 19, 23] | Sinapic acid | 225 | | ID | ID | [22, 23] | Dihydroxymandelic acid | 185 | | ID | ID | [15] | Vanillin | 153 | | ID | ID | [5, 16, 23, 24] | Secoiridoids and derivatives | | | | | | Oleuropein | 541 | 227/225, 303/301 | ID | ID | [4, 5, 14, 15, 17, 24, 25] | 3,4-DHPEA-EA | 379 | | ID | ID | [5, 16, 17, 19, 20] | 3,4-DHPEA-EDA | 321 | | ID | NI | [5, 17] | Oleuropein derivatives | 369 | 225/223, 141/139 | NI | ID | [5, 17] | Elenolic acid (p-HPEA-EDA) | 243 | 225/223, 197/195, 179/177 | ID | ID | [5, 15–17, 19, 22] | Ligstroside | 525 | 395/393 | ID | ID | [5, 14, 15, 23] | p-DHPA-EA | 363 | | NI | ID | [5, 16, 17, 19, 20] | Ligstroside derivatives | 337 | 217/215, 155/153 | ID | ID | [5, 20, 24] | Ligstroside derivatives | 293 | | ID | NI | [20] | Ligstroside derivatives | 395 | 259/257 | ID | ID | [20] | Hydroxytyrosol glucoside | 317 | 137/135 | ID | NI | [5, 15, 16] |
Oleoside | 391 | | ID | NI | [14, 15, 23, 26] | Verbascoside | 365 | | ID | NI | [14, 15, 23, 24] | Flavonoids | | | | | | Apigenin | 271 | | NI | ID | [5, 14, 16, 19, 22, 23] | Luteolin | 287 | 153/151 | ID | ID | [5, 14, 15, 20, 22, 24] | Luteolin-7-glucoside | 449 | 287/285 | NI | ID | [5, 14–16, 19, 23, 24] | Nüzhenide | 685 | | NI | ID | [19] | Quercetin | 303 | | ID | ID | [14, 22, 23] |
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