Table 3 Kovats retention index (RI), retention times (RT), concentration of each component (relative area), and important ions present in the mass spectra of compounds of the identified compounds in the ethanolic extract of geopropolis (EEGP) and its hexane fraction (HF) by gas chromatography–mass spectrometry (GC-MS)
From: Antimicrobial and antiproliferative activities of stingless bee Melipona scutellaris geopropolis
Compound | RI | RT (min) | Relative area (%) | Major MS peaks: m/z | |
|---|---|---|---|---|---|
EEGP | HF | ||||
2-propensaeure 3-phenyl-trimethylsilylester | 1542 | 17.84 | 8.91 | 3.92 | 220, 205, 161, 145, 131, 103, 77 |
1,2-benzenedicarboxylic acid | 2543 | 36.60 | NDa | 2.24 | 167, 149, 57 |
3 | – | 43.06 | 0.68 | 9.64 | 591, 589, 499, 445, 73 |
4 | – | 43.79 | 6.88 | 8.40 | 591, 589, 501, 459, 445, 73, 57 |
5 | – | 46.38 | 3.34 | 9.06 | 533, 386, 177, 165, 151, 138, 105, 77, 69, 55 |
6 | – | 46.94 | 5.79 | 2.30 | 495, 459, 417, 105, 77, 73, 69, 57, 55 |
7 | – | 47.29 | 19.17 | 10.35 | 548, 533, 479, 389, 73, 45 |
8 | – | 47.71 | 29.15 | 38.98 | 623, 536, 535, 105, 73, 69 |
9 | – | 47.91 | 6.93 | 4.76 | 623, 533, 551, 461, 407, 105, 77, 73 |