Table 1.
Identification of polyphenol compounds detected in methanolic extract from G. tinctoria leaves by UHPLC-DAD-HR-Q-Orbitrap MS
| Peak # (Fraction) | UV max | Tentative identification | Molecular formula | Retention time (min) | Measured mass (m/z) | MSn ions |
|---|---|---|---|---|---|---|
| 1 (F1) | 310 | p-Coumaroyl glucoside | C15H17O8 | 9.78 | 325.09649 | – |
| 2 (F1) | 325 | Digalloylglucose | C20H17O14 | 9.57 | 483.07800 | – |
| 3 (F1) | 256–353 | Rutin | C27H29O16 | 10.32 | 609.14611 | 301.03512 |
| 4 (F2) | 254–354 | Quercetin-3-O-rhamnoside | C21H20O11 | 10.63 | 447.09316 | – |
| 5 (F2) | 325 | Potentilline | C41H27O26 | 11.55 | 935.07501 | 300.99906 |
| 6 (F2) | 325 | Tellimagrandin | C41H29O26 | 12.23 | 937.08966 | 300.99908 |
| 7 (F3) | 282, 326 (shoulder) | Ellagic acid | C14H5O8 | 12.43 | 300.99855 | 284.2; 229.3; 185.2 |
| 8 (F4) | 324 | Caffeic acid | C9H7O4 | 12.83 | 179.03441 | – |
| 9 (F4) | 325 | Chebulagic acid | C41H29O27 | 13.22 | 953.09017 | 300.99856 |
| 10 (F4) | 255–275 | Unknown | C11H11O6 | 13.53 | 239.0560 | – |