Identified constituents from okra seed extract based on UPLC-DAD/Q-TOF MS analysis.
| No. | t r (min) | MS− (m/z) | MS/MS (m/z) | Formula | Identification |
|---|---|---|---|---|---|
| 1 | 5.07 | 1218.2329 | 913.1798 | C60H50O24 | Epigallocat tetramer |
| 609.1238 | |||||
| 305.0684 | |||||
| 2 | 7.71 | 913.1882 | 305.0663 | C45H38O18 | Epigallocat trimmer |
| 609.1227 | |||||
| 3 | 14.30 | 289.0682 | C15H14O6 | Epicatechin | |
| 4 | 14.50 | 305.0654 | C15H14O7 | Gallocatechin | |
| 5 | 18.11 | 289.0735 | C15H14O6 | Catechin (stda) | |
| 6 | 18.85 | 477.1194 | 387.1658 | C22H22O12 | Isorhamnetin-3-O-β-d-glucoside |
| 299.0641 | |||||
| 163.0414 | |||||
| 7 | 20.38 | 595.4586 | 300.0255 | C26H28O16 | Quercetin-3-O-β-d-xyl(1→2)-β-d-glucoside (stda) |
| 8 | 21.98 | 609.4293 | 300.0311 | C27H30O16 | Quercetin-7-O-rutinoside |
| 9 | 22.42 | 479.0829 | 317.0225 | C21H20O13 | Myricetin-3-O-β-d-glucoside |
| 163.0011 | |||||
| 10 | 22.66 | 595.1301 | 300.0277 | C26H28O16 | Quercetin-3-O-β-d-xyl(1→2)-β-d-galactoside |
| 11 | 23.14 | 625.1394 | 300.027 | C27H30O17 | Quercetin-3-O-gentiobioside (stda) |
| 12 | 24.48 | 463.0878 | 300.026 | C21H20O12 | Isoquercitrin (stda) |
| 13 | 24.67 | 609.1459 | 463.0863 | C27H30O16 | Rutin (stda) |
| 301.0346 | |||||
| 14 | 25.32 | 505.1017 | 446.0776 | C23H22O13 | Quercetin-3-O-β-d-6′′-(acetyl)glucopyranoside |
| 301.0360 | |||||
| 15 | 28.86 | 301.0363 | C15H10O7 | Quercetin (stda) | |
| 16 | 31.30 | 299.0226 | 285.0389 | C16H12O6 | Kaempferide (stda) |
| 17 | 31.94 | 315.0535 | C16H12O7 | Isorhamnetin (stda) |
a
Identification by comparing with reference substances.