Table 2.
Individual phenolic compounds identified by UPLC-PDA-MS/MS.
| Compounds | Rt | [M − H] m/z | ||
|---|---|---|---|---|
| min | MS | MS/MS | ||
| 1 | Gallic acid | 1.10 | 169 | 125 |
| 2 | Chlorogenic acid | 1.91 | 353 | 191 |
| 3 | Digalloyl ester of procyanidin dimer | 2.36 | 881 | 577.289 |
| 4 | (+) catechin | 2.89 | 289 | 137 |
| 5 | Digalloyl ester of procyanidin dimer | 3.34 | 881 | 577.289 |
| 6 | Ellagic acid hexoside | 3.81 | 463 | 301 |
| 7 | Procyanidin dimer | 4.05 | 577 | 289 |
| 8 | Ellagic acid hexoside | 4.16 | 463 | 301 |
| 9 | Ellagic acid hexoside | 4.24 | 463 | 301 |
| 10 | Quercetin hexoside | 4.62 | 463 | 301 |
| 11 | (−) epicatechin gallate | 4.72 | 441 | 331.289 |
| 12 | Valenoic acid dilactone | 5.13 | 469 | 451.425 |
| 13 | Unspecified derivative of caffeic acid | 5.33 | 563 | 179 |
| 14 | Kaempferol hexoside | 5.40 | 447 | 285 |
| 15 | Ellagic acid pentoside | 6.05 | 433 | 301 |