Table 1.
Rt, MS: [M − H]−, MS2 [M − H]− and relative abundance (%; calculated based on the intensity of the main base peak in the MS2 fragmentation pattern, which is considered as 100%) of phenolic compounds identified (marked by an X) in fruit samples of pepino (S. muricatum) and its wild relative S. caripense samples.
| Peak | Compound | Rt | [M − H]− | MS2[M − H]−, m/z (%) | 37-A | El Camino | Puzol | Valencia | E-7 |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Di-caffeoyl-quinic acid I | 15.2 | 515 | 353 (54), 191(100) | – | – | – | – | X |
| 2 | 3-Caffeoyl-quinic acid | 16.4 | 353 | 191 (100), 179 (42) | X | X | X | X | X |
| 3 | Caffeoyl-hexoside I | 17.4 | 341 | 179 (100), 135 (21) | – | X | X | X | X |
| 4 | Caffeoyl-hexoside II | 17.6 | 341 | 179 (64), 135 (9) | – | X | X | X | – |
| 5 | Di-caffeoyl-quinic acid II | 18.4 | 515 | 353 (78), 191 (88) | – | – | – | – | X |
| 6 | Caffeoyl-hexoside III | 18.4 | 341 | 179 (100), 135 (19) | – | X | X | X | – |
| 7 | Feruloyl-hexoside | 19.2 | 355 | 193 (100), 175 (53) | – | – | X | – | – |
| 8 | Caffeoyl-di-hexoside | 19.3 | 503 | 341 (36), 179 (100) | – | X | X | X | – |
| 9 | Caffeoyl-hexose IV | 19.8 | 341 | 179 (100), 135 (12) | X | X | X | X | X |
| 10 | 5-Caffeoyl-quinic acid | 20.6 | 353 | 191 (100) | X | X | X | X | X |
| 11 | 4-Caffeoyl-quinic acid | 20.7 | 353 | 173 (100) | X | X | X | X | X |
| 12 | p-Coumaroyl-di-hexoside | 22.0 | 487 | 325 (14), 163 (100) | – | X | X | X | X |
| 13 | Feruloyl-hexoside | 22.3 | 355 | 193 (100), 175 (56) | – | X | X | X | – |
| 14 | Caffeoyl-quinic acid isomer | 23.0 | 353 | 191 (100) | – | X | – | – | – |
| 15 | Feruloyl-dihexoside | 23.2 | 517 | 235 (50), 193 (100), 175 (76) | – | X | X | X | – |
| 16 | Sinapoyl-di-hexoside | 23.4 | 547 | 265 (82), 324 (43), 223 (28) | – | X | – | – | – |
| 17 | Feruloyl-hexoside | 24.4 | 355 | 193 (100), 175 (19) | – | – | – | X | – |
| 18 | Caffeoyl-hexoside derivative | 27.8 | 441 | 341 (100) | – | – | – | X | – |
| 19 | Di-caffeoyl-quinic acid | 30.6 | 515 | 353 (100), 191 (12) | – | – | X | – | – |
| 20 | Sinapoyl-quinic acid derivative | 31.1 | 577 | 415 (100), 353 (13), 191 (9) | – | X | – | – | – |
| 21 | Feruloyl-di-hexoside derivative | 31.7 | 517 | 323 (100), 193 (41), 179 (19) | – | – | X | – | – |
| 22 | Di-caffeoyl-quinic acid | 32.9 | 515 | 353 (100), 191 (2) | – | X | X | X | – |
| 23 | Caffeoyl-hexoside derivative | 34.6 | 423 | 179 (100), 135 (28) | – | – | – | X | – |
| 24 | Caffeoyl-sinapoyl-quinic acid | 35.7 | 559 | 397 (100), 223 (18), 173 (3) | X | X | X | X | X |