Table 1.
List of phenolic compounds in HT-extracted CS liquid fraction identified by LC-QTOF-MS.
| No. | Proposed Compounds | Molecular Formula | Mass | Matching Score (%) * |
|---|---|---|---|---|
| Alkaloids | ||||
| 1 | Caffeine | C8H10N4O2 | 194.0795 | 74.20 |
| Polyphenols | ||||
| Phenolic acids | ||||
| 2 | 3-O-Caffeoylshikimic acid | C16H16O8 | 336.0838 | 95.70 |
| 3 | 5-O-Caffeoylshikimic acid | C16H16O8 | 336.0840 | 95.36 |
| 4 | 3-Dehydroshikimic acid | C7H8O5 | 172.0362 | 86.71 |
| 5 | 5Z-Caffeoylquinic acid CQA | C16H18O9 | 354.0943 | 94.83 |
| 6 | Caffeic acid | C9H8O4 | 180.0419 | 93.69 |
| 7 | cis-p-Coumaric acid-4-4-(apiosyl-(1->2)-glucoside) | C20H26O12 | 458.1412 | 81.76 |
| 8 | Ferulic acid | C10H10O4 | 194.0579 | 97.13 |
| 9 | Loganic acid | C16H24O10 | 376.1366 | 72.74 |
| 10 | p-Coumaric acid | C9H8O3 | 164.0471 | 86.48 |
| 11 | Quinic acid | C7H12O6 | 192.0629 | 97.79 |
| 12 | Shikimic acid | C7H10O5 | 174.0526 | 94.58 |
| 13 | Syring acid | C9H10O5 | 198.0531 | 97.57 |
| 14 | trans-p-Coumaric acid-4-glucoside | C15H18O8 | 326.0992 | 89.13 |
| 15 | Vanillic acid | C8H8O4 | 168.0421 | 90.81 |
| Flavonoids | ||||
| 16 | Kaempferol | C15H10O6 | 286.0464 | 75.89 |
| 17 | Epicatechin | C15H14O6 | 290.0783 | 97.19 |
| 18 | Quercetin | C15H10O7 | 302.0443 | 89.32 |
| 19 | trans-Resveratrol | C14H12O3 | 228.0787 | 70.37 |
| Xanthone | ||||
| 20 | Isogentisin | C14H10O5 | 258.0542 | 87.97 |
| Secoiridoids | ||||
| 21 | Amarogentin | C29H30O13 | 586.1710 | 80.19 |
* Matching score (%) represents the correlation quality of precursor and corresponding fragment ion peaks for each compound.