Table 4.
The gas chromatography/mass spectrometry analysis of the main bioactive compounds found in paulownia leaf extracts (PLEs).
| Bioactive compound | Retention time | Peak area % |
|---|---|---|
| Thymol | 7.86 | 82.37 |
| Flavonoids | 10.77 | 1.65 |
| Phytol | 19.04 | 9.28 |
| Pentadecanoic acid | 16.82 | 2.39 |
| Octasiloxane | 38.59 | 2.78 |
| Alkaloids | 26.41 | 1.10 |
| Saponins | 29.96 | 1.43 |
| Terpenoids | 20.27 | 0.33 |
| Phenolics | 38.99 | 1.27 |
| à-Tocospiro | 26.59 | 3.18 |
| Aldehyde | 20.88 | 0.25 |
| TPC as mg/g dried PLE | 36.5 ± 0.81 | |
| TAC as mg/g dried PLE | 3.74± 1.12 | |
TPC, total phenolic content; TAC, total anthocyanin content; PLE, Paulownia leaf extract.