Table 1.
Identification of flavonoids in fraction II of lotus leaves by LC-MS/MS.
| Peak No. | Rt (min) a | NI-MS | MS/MS | Identification |
|---|---|---|---|---|
| 1 | 25.9 | 479 | 316 | Myricetin 3-O-hexose |
| 2 | 27.4 | 595 | 300 | Quercetin 3-O-arabinopyranosyl-(1→2)-galactopyranoside |
| 3 | 33.0 | 609 | 300 | Quercetin 3-O-rhamnopyranosyl-(1→2)-glucopyranoside |
| 4 | 34.1 | 463 | 300 | Quercetin 3-O-galactoside (hyperoside) |
| 5 | 35.5 | 463 | 300 | Quercetin 3-O-glucoside (isoquercitrin) |
| 6 | 37.2 | 477 | 301 | Quercetin 3-O-glucuronide |
| 7 | 38.7 | 433 | 300 | Quercetin 3-O-arabinoside |
| 8 | 40.6 | 447 | 284 | Kaempferol 3-O-galactoside |
| 9 | 43.7 | 447 | 284 | Kaempferol 3-O-glucoside (astragalin) |
| 10 | 45.7 | 461 | 285 | Kaempferol 3-O-glucuronide |
| 11 | 47.5 | 461 | 446; 298; 283 | Diosmetin 7-O-hexose |
| 12 | 52.6 | 609 | 314; 299 | Isorhamnetin 3-O-arabinopyranosyl-(1→2)-glucopyranoside |
| 13 | 56.7 | 477 | 314 | Isorhamnetin 3-O-hexose |
| 14 | 57.9 | 491 | 315 | Isorhamnetin 3-O-glucuronide |
a Rt: retention time on HPLC.