Table 1.
Triple TOF-LC-MS-MS analysis of the polyphenols (mg/kg) in aqueous olive leaves extracts obtained with conventional (CE) and ultrasound-assisted (UAE) procedures.
| Compound Name | Formula | Expected m/z | CE | UAE |
|---|---|---|---|---|
| Oleoside 11-methylester | C17H24O11 | 403.1246 | 18537 ± 151 | 18128 ± 290 |
| Rhoifolin | C27H30O14 | 577.1563 | 6932 ± 574 | 6123 ± 429 |
| Demethyloleuropein | C24H30O13 | 525.1614 | 5676 ± 317 | 4692 ± 143 |
| Querc-3-O-gal-7-O-rhamnoside | C27H30O16 | 609.1461 | 3555 ± 319 | 2651 ± 137 |
| Phloretin xylosyl-galactoside | C26H32O14 | 567.1719 | 4164 ± 222 | 3369 ± 124 |
| 3-Hydroxyphloretin 2-O-xylosyl-gluc | C26H32O15 | 583.1668 | ND | 956 ± 57 |
| Kaempferol 3-rutinoside | C27H30O15 | 593.1512 | ND | 2682 ± 213 |
| Kaempferol 3-O-sophoroside | C27H30O16 | 609.1461 | 3555 ± 319 | 2651 ± 137 |
| Verbascoside | C29H36O15 | 623.1981 | 2692 ± 21 | 2250 ± 122 |
| Apigenin 6-C-glucoside | C21H20O10 | 431.0984 | 1956 ± 61 | 1593 ± 100 |
| 1-Sinapoyl-2-feruloylgentiobiose | C33H40O18 | 723.2142 | 1622 ± 124 | 1601 ± 153 |
| Isorhamnetin 7-O-rhamnoside | C22H22O11 | 461.1089 | 1457 ± 125 | 1083 ± 101 |
| Hydroxytyrosol | C8H10O3 | 153.0557 | 766 ± 26 | 646 ± 13 |
| Diosmin | C28H32O15 | 607.1668 | 649 ± 21 | 548 ± 36 |
| Kaempferol 3-O-rhamnosyl-rhamnosyl-gluc | C33H40O19 | 739.2091 | 639 ± 32 | 616 ± 19 |
| Hydroxytyrosol 1-O-glucoside | C14H20O9 | 331.1035 | 667 ± 81 | 671 ± 23 |
| Protocatechuic acid 4-O-glucoside | C13H16O9 | 315.0722 | 595 ± 17 | 488 ± 17 |
| Sinapoyl glucose | C17H22O10 | 385.114 | 488 ± 24 | ND |
| Matairesinol | C20H22O6 | 357.1344 | 455 ± 27 | 506 ± 18 |
| Kaempferol | C15H10O6 | 285.0405 | 474 ± 65 | 216 ± 50 |
| p-HPEA-EA | C19H22O7 | 361.1293 | 350 ± 61 | ND |
| 3,4-DHPEA-EA | C19H22O8 | 377.1242 | ND | 929 ± 139 |
| 3-Methylcatechol | C7H8O2 | 123.0452 | 339 ± 58 | ND |
| Quercetin 3-O-glucoside | C21H20O12 | 463.0882 | 294 ± 8 | 171 ± 28 |
| Oleoside dimethylester | C18H26O11 | 417.1402 | 285 ± 9 | 201 ± 22 |
| 4-Hydroxybenzoic acid 4-O-gluc | C13H16O8 | 299.0772 | 185 ± 5 | 156 ± 11 |
| p-Coumaric acid | C9H8O3 | 163.0401 | 170 ± 1 | 126 ± 23 |
| Dihydroquercetin 3-O-glucoside | C21H22O12 | 465.1039 | 163 ± 16 | 117 ± 12 |
| 3-Sinapoylquinic acid | C18H22O10 | 397.114 | 111 ± 13 | ND |
| Quercetin | C15H10O7 | 301.0354 | 46 ± 5 | ND |
| Rosmadial | C20H24O5 | 343.1551 | ND | 79 ± 45 |
ND: Not detected. Querc-3-O-gal-7-O-rhamnoside: Quercetin 3-O-galactoside 7-O-rhamnoside. Gluc: glucoside.