Table 2.
Insoluble-bound proanthocyanidin composition from guarana powder (Paullinia cupana) a.
| Calculated [M + H]+ |
Observed [M + H]+ |
Possible Identity | |
|---|---|---|---|
| Dimers | 544.136 | 545.013 | Type-A afzelechin dimer |
| 560.131 | 560.993 | Type-A afzelechin/catechin dimer | |
| 576.126 | 576.969 | Type-A catechin dimer | |
| Trimers | 814.188 | 815.082 | Type-A afzelechin trimer |
| 830.183 | 831.052 | Type-A (2)afzelechin/catechin trimer | |
| 846.178 | 847.021 | Type-A afzelechin/(2)catechin | |
| 862.173 | 862.995 | Type-A catechin trimer | |
| Tetramers | 1090.288 | 1089.061 | Type-B afzelechin tetramer |
| 1106.283 | 1105.044 | Type-B (3)afzelechin/catechin tetramer | |
| 1122.278 | 1121.009 | Type-B (2)afzelechin/(2)catechin tetramer | |
| 1116.230 | 1117.052 | Type-A (2)afzelechin/(2)catechin tetramer | |
| 1132.225 | 1133.023 | Type-A afzelechin/(3)catechin tetramer | |
| 1148.220 | 1148.998 | Type-A catechin tetramer | |
| 1164.215 | 1164.962 | Type-A (3)catechin/gallocatechin tetramer |
a: Selected peaks of the IBPP fraction obtained with MALDI-TOF.