Table 4.
Compounds identified in the hydroethanolic geopropolis extract produced by M. fasciculata stingless bee from Pinheiro city, Maranhão State, Brazil, by LC–ESI/IT–MS/MS.
| Compound | RT (min) | Identification | MW | [M − H]− (m/z) | MS/MS Fragments (m/z) |
|---|---|---|---|---|---|
| 1 | 2.8 | gluconic acid | 196 | 195 | 128; 177 |
| 2 | 16 | taraxerone | 424 | 423 | 304; 334; 364; 406 |
| 3 | 17.8 | dihydroquercetin-C-glycoside | 450 | 449 | 431; 359; 329; 287; 303 |
| 4 | 18.2 | dihydroquercetin-C-glycoside isomer | 450 | 449 | 430; 359; 329 |
| 5 | 19.1 | narigenin-C-glycoside | 434 | 433 | 313 |
| 6 | 20.2 | narigenin-C-glycoside isomer | 434 | 433 | 415; 313 |
| 7 | 21 | vitexin-O-galate | 584 | 583 | 169; 313; 932; 537 |
| 8 | 22.5 | pinobanksin glycosilated | 436 | 435 | 270; 151; 341; 391 |
| 9 | 22,9 | dihydroquercetin 3-O-ramnoside | 450 | 449 | 303; 405 |
| 10 | 33.8 | xantholaccaic acid A | 521 | 520 | 262; 357; 419; 458; 502; 542 |
| 11 | 42.5 | gallocatequin-xylose | 438 | 437 | 305; 357; 393; 437 |
RT, retention time; MW, molecular weight; [M − H]− molecular ion.