Open Access
Table
Characteristics and levels of the PCs detected by HPLC in the extracts of S. pallasii leaves and inflorescences
| Peak No. | Compound | Retention time (TR), min | Spectral characteristic (λmax, nm) | Content, mg/g of air-dried materials | |
|---|---|---|---|---|---|
| leaves | inflorescences | ||||
| Extracts (solvent system I) | |||||
| 1 | chlorogenic acid | 3.2 | 244, 300 gc, 330 | 0.17 | 0.07 |
| 2 | p-hydroxybenzoic acid | 4.3 | 250 | 0.50 | 0.11 |
| 3 | flavanone | 10.2 | 280, 325 | 4.88 | 2.40 |
| 4 | hyperoside | 18.0 | 255, 268 gc, 355 | 1.49 | 2.60 |
| 5 | isoquercitrin | 19.4 | 259, 266 gc, 358 | 1.01 | 1.80 |
| 6 | flavonol | 24.5 | 255, 275, 355 | 5.82 | 1.08 |
| 7 | quercitrin | 30.8 | 260, 330 | 1.49 | 1.70 |
| 8 | astragalin | 32.5 | 265, 300 gc, 350 | 0.80 | 2.11 |
| 9 | flavone | 36.9 | 270,340 | 6.83 | 0.85 |
| 10 | kaempferol | 47.0 | 265, 365 | - | 0.17 |
| Hydrolysates of extracts (solvent system II) | |||||
| 1 | quercetin | 6.6 | 255, 372 | 8.13 | 7.60 |
| 2 | luteolin | 8.3 | 250, 260 gc, 350 | 0.65 | - |
| 3 | kaempferol | 11.1 | 265, 365 | 1.90 | 9.19 |
| 4 | isorhamnetin | 12.4 | 255, 370 | 1.12 | 5.47 |
Note. Each peak number in the table corresponds to a peak number in the Fig.; compound not detected.
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