Table 1.
Peaks identification of hazelnut skin aqueous extract through HPLC/ESI-MS.
| N° | Compound Identified | Retention Time (min) | m/z (M−H)− |
|---|---|---|---|
| 1 | Gallic acid | 4.43 | 169 |
| 2 | Protocatechuic acid | 7.32 | 153 |
| 3 | Procyanidin C2 trimer | 7.55 | 865 |
| 4 | Prodelphinidin beta-type dimer | 8.19 | 593 |
| 5 | Prodelphinidin beta-type dimer | 9.05 | 593 |
| 6 | Prodelphinidin beta-type dimer | 9.59 | 593 |
| 7 | Procyanidin beta 1 dimer | 11.96 | 577 |
| 8 | (+) Catechin | 12.41 | 289 |
| 9 | Procyanidin beta-type trimer | 13.03 | 865 |
| 10 | Procyanidin beta-type trimer | 13.83 | 865 |
| 11 | (-) epicatechin | 16.20 | 289 |
| 12 | Procyanidin Beta-type dimer gallate | 19.55 | 729 |