Table 3.
LC-MS identification of phenolic compounds from Pawnee pecan (peaks from Figure 1).
| Peak No | RT | M-H | * MS Fragments | Identification |
|---|---|---|---|---|
| 1 | 14.87–14.96 | 577 | 451, 425, 407, 289, 245 | Procyanidin B2 |
| 1a | 15.89–16.29 | 451 | 289 | Catechin hexoside |
| 2 | 17.00 | 433 | 301, 165 | Ellagic acid pentoside |
| 2a | 17.82–17.89 | 477 | 315, 301 | Methyl ellagic acid hexoside |
| 3 | 18.69–18.82 | 447 | 315, 301 | Methyl ellagic acid pentoside |
| 4 | 19.49–19.56 | 615 | 463, 301 | Di-galloyl ellagic acid |
| 4a | 19.89 | 585 | 433, 301 | Ellagic acid galloyl pentoside |
| 5 | 20.36 | 599 | 447, 315 | Methyl ellagic acid galloyl pentose |
* Note: Bold numbers indicate the base peaks in MSn spectra.