Table 1.
Constituents of PT analyzed via UPLC–QTofMS analysis.
| Peak No. | ESI-MS RT (min) |
UV (nm) | Detected Ion (m/z) [M−H]− | Calculated Ion (m/z) [M−H]− | Fragments | Molecular Formula | Identification |
|---|---|---|---|---|---|---|---|
| 1 | 3.37 | 254, 351 | 477.0648 | 477.0669 | 301 | C21H18O13 | Quercetin-3-O-β-d-glucuronide |
| 2 | 3.53 | 254, 354 | 607.1312 | 607.1299 | 505, 463, 301 | C27H28O16 | Quercertin-3-O-[6′′-O-(3-hydroxy-3-methylglutaryl)-β-d-glucopyranoside] |
| 3 | 3.70 | 268, 338 | 477.1031 | 477.1033 | 315, 299 | C22H22O12 | Isorhamnetin-3-O-β-d-glucopyranoside |
| 4 | 3.86 | 265, 346 | 591.1360 | 591.1350 | 447, 285 | C27H28O15 | Kaempferol-3-O-[6′′-(3-hydroxy-3-methylglutaryl)-β-d-glucopyranoside] |
| 5 | 4.51 | 277, 339 | 475.1005 | 475.0877 | 313 | C22H20O12 | 3,5,4′-Trihydroxy-6,7-methylenedioxyflavone-3-O-β-d-glucopyranoside |
| 6 | 4.60 | 277, 340 | 619.1486 | 619.1299 | 475, 313 | C28H28O16 | 3,5,4′-Trihydroxy-6,7-methylenedioxyflavone-3-O-[6′′-(3-hydroxy-3-methylglutaryl)- β-d-glucopyranoside] |
| 7 | 4.70 | 277, 339 | 517.1122 | 517.0982 | 475, 313 | C24H22O13 | 3,5,4′-Trihydroxy-6,7-methylenedioxyflavone-3-O-[6′′-(acetyl)-β-d-glucopyranoside] |
| 8 | 5.26 | 274, 339 | 531.0790 | 531.0775 | 471, 313 | C24H20O14 | 3,5,4′-Trihydroxy-6,7-methylenedioxyflavone-3-O-[2′′-(acetyl)-β-d-glucuronide] |
| 9 | 6.24 | 274, 351 | 313.0327 | 313.0348 | no fragment | C21H18O13 | 3,5,4′-Trihydroxy-6,7-methylenedioxyflavone |