Table 4.
The number of phenolic compounds in the poplar bud sample, expressed in mg/g chlorogenic acid equivalent (CCE).
| Peak No. | Rt (min) | Compound | Amount mg/g CEE |
|---|---|---|---|
| 1 | 2.96 | Dihydroxybenzoic acid | 13.022 |
| 2 | 9.78 | Protocatechuic acid | 2.674 |
| 3 | 10.28 | 3-Caffeoylquinic acid (Neochlorogenic acid) | 3.382 |
| 4 | 11.89 | 5-Caffeoylquinic acid (Chlorogenic acid) |
8.216 |
| 5 | 12.52 | Caffeic acid | 4.983 |
| 6 | 13.52 | Chicoric acid | 30.021 |
| 7 | 15.90 | Apigenin-glucuronide | 55.828 |
| 8 | 17.21 | Chry-glucuronide | 48.765 |
| 9 | 20.31 | Tremuloidin | 30.459 |
| 10 | 22.17 | Salicin | 8.874 |
| 11 | 22.81 | Pinostrobin | 18.307 |
| 12 | 25.64 | Tremulacin | 14.642 |
| Total phenolic content | 239.174 | ||