Table 1.
Retention times, MS, and MS fragments of the major bioactive constituents present in hydroethanolic M. oleifera crude flower extract by HPLC–DAD–ESI–MS/MS.
| Peak | Retention time (RT) | Molecular ion peak (M−H)− | MS2 fragment ions intensity | Tentative compounds identified |
|---|---|---|---|---|
| 1 | 0.53 | 191 | 173, 127, 93 (100), 85 | Quinic acid |
| 2 | 1.05 | 337 | 191, 163, 119 (100) | 4-p-Coumaroylquinic acid |
| 3 | 2.24 | 506 | 300 (100), 271, 255, 179, 151 | Quercetin-3-O-acetyl glucoside |
| 4 | 2.63 | 490 | 284/286, 255 (100), 227 | Kaempferol-3-O-acetyl hexoside |
| 5 | 3.57 | 329 | 229, 211 (100), 171, 99 | Octadecenoic acid |
| 6 | 5.67 | 325 | 281, 253, 225, 183 (100) | Heneicosanoic acid |
| 7 | 6.07 | 339 | 275, 239, 199, 183 (100) | Behenic (docosanoic) acid |