Table 3.
Compounds tentatively identified in pequi peel extract using ESI–MS in the negative ion mode
| [M–H]− | Tentative identification | Measured m/z | Calculated m/z | Error (ppm) |
ESI–MS/MS |
|---|---|---|---|---|---|
| C7H5O5 | Gallic acid | 169.01420 | 169.01425 | −0.30 | 79, 125 |
| C7H11O6 | Quinic acid | 191.05600 | 191.05611 | −0.57 | 85, 93, 127 |
| Brevifolin carboxylic acid fragment | 247.02462 | 191, 219 | |||
| C13H7O8 | Brevifolin carboxylic acid | 291.01452 | 291.01464 | −0.41 | 247, 219, 191 |
| C14H5O8 | Ellagic acid | 300.99919 | 300.99899 | 0.66 | 145, 284 |
| C13H15O10 | Glucogallin | 331.06673 | 331.06707 | −1.03 | 169, 241 |
| C19H13O12 | Ellagic acid xyloside | 433.04144 | 433.04125 | 0.44 | 301 |
| C20H15O12 | Ellagic acid rhamnoside | 447.05902 | 447.05690 | 4.74 | 301 |
| C20H15O13 | Ellagic acid glucoside | 463.05293 | 463.05181 | 2.42 | 301 |
| C27H21O18 | Corilagin | 633.07152 | 633.07334 | −2.87 | 301 |
| C41H27O27 | Geraniin | 951.06917 | 951.07452 | −5.63 | 301 |