Table 3.
Compounds identified by LC-ESI-IT-MS/MS on negative mode, in pollen extract collected by S. aff. postica.
| Nº | Retention Time (min) | [M−H]− | MSn Ion m/z (−) | Tentative Identification |
|---|---|---|---|---|
| 1 | 3.0 | 195 | 285; 177 | gluconic acid |
| 2 | 32.9 | 477 | 325; 315 | digalloylshikimic acid |
| 3 | 33.1 | 625 | 301 | quercetin-3,4-diglucoside |
| 4 | 33.4 | 431 | 311 | apigenin-6-C-glucoside |
| 5 | 33.6 | 593 | 429; 357 | isoorientin-2”-O-rhamnoside |
| 6 | 33.7 | 879 | 439; 289 | procyanidin dimmer digallate (a-type) |
| 7 | 33.8 | 577 | 285 | kaempferol 3,7-di-O-rhamnoside |
| 8 | 35.4 | 301 | - | ellagic acid |
| 9 | 35.3 | 331 | 315; 271; 209 | monogalloylglucose |
| 10 | 39.7 | 315 | 299; 153 | protocatechuic acid 3-glucoside |