Table 1.
Retention time, UV and mass spectral data, and tentative identification of the phenolic components in ethanolic leaves extractof D. viscosa.
| Peak n | Tr (min) | λ max max | [M-H]− (m/z) | Fragments ions (m/z) | Tentative of identification | Ref/std |
|---|---|---|---|---|---|---|
| 1 | 7.969 | 325 | 353 | 191 (100)-161(10) | Chlorogenic acid | std |
| 2 | 8.231 | 260-324 | 375 | 375(20)-191(100) | 3-o-Caffeoylquinic acid | std |
| 3 | 9.153 | 293-324- | 543 | 387(50)-191(100) | 1,3-O-Dicaffeoylquinic acid | std |
| 4 | 11.405 | 260 | 599 | 467(100) | Ganoderic acid C6 | [20] |
| 5 | 11.694 | 260 | 599 | 467(100) | Ganoderic acid C6 | [20] |
| 6 | 12.243 | 280 | 583 | 467(100)-329(50) | Ganoderic acid D | [20] |
| 7 | 18.712 | 284sh | 609 | 429(60)-341(20)-301(100)-151(60) | Quercetin-galactosylrhamnoside | [21] |
| 8 | 19.609 | 260-284sh | 741 | 509(50)- 301(100)- 241(60) | Rutin-O-pentoside | [22] |
| 9 | 20.751 | 260-331 | 463 | 301(100)-179(20)-151(30) | Quercetin-3-O-glucoside | [23] |
| 10 | 21.158 | 260-332 | 591 | 301(100)-179(20)-151(30) | Rutin | std |
| 11 | 22.791 | 326 sh | 741 | 301(100)-241(20)-151(30) | Quercetin-7-O-xyloside-3-O-rutinoside | [23] |
| 12 | 23.350 | 327 | 515 | 315(70)-191(40)-179(100) | 3,4-Dicaffeoylquinic acid | std |
| 13 | 25.543 | 327 | 515 | 353 (33)-191 (100)- 179(30) | 3,5-Dicaffeoylquinic acid | std |
| 14 | 26.253 | 327 | 677 | 515(15)-353(15)-191(100)-179(40)-135(20) | Dicaffeoylquinic acid glucoside | [24] |
| 15 | 27.015 | 326 | 653 | 515(15)-353(15)-191(100)-179(40)-135(20 | 3, 4,5-Tricaffeoylquinic acid | std |
| 16 | 28.901 | 327 | 515 | 353(30)-191(50)-179(100)-135(40) | 1,5-Dicaffeoylquinic acid | std |
| 17 | 29.180 | 327 | 515 | 353(30)-191(50)-179(100)-135(40) | 3,5-Dicaffeoylquinic acid | std |
| 18 | 30.525 | 324 | 591 | 509(30)-191(70)-179(100) | 4,5-Dicaffeoylquinic acid | std |
| 19 | 32.022 | 326 | 790 | 591- 405(80)-241(100)-191(60) | Dehydrodimers of caffeic acid | [25] |
| 20 | 33.291 | 260-327 | 489 | 241(100) | Isoorientin | [26] |
| 21 | 35.414 | 281-327 | 489 | 241(100) | Isoorientin | [26] |
| 22 | 36.108 | 292-323 | 303 | 241(60), 151(100) | Dihydroquercetin | [21] |
| 23 | 39.280 | 280-328 | 567 | 413(100) | Apigenin-glucoside | [26] |
| 24 | 41.792 | 288 | 493 | 493(100) | Myricetin-O-glucuronide | [27] |
| 25 | 44.651 | 332-288 | 495 | 493(100) | Dihydromyricetin-O-glucuronide | [28] |
| 26 | 46.004 | 260-297-330 | 493 | 493(75)-315(100)-300 (50)-271 (80) | Isorhamnetin-O-glucuronopyranoside | [29] |
| 27 | 47.815 | 260-290-331 | 533 | 515(100), 353 (80) | Dicaffeoylquinic derivatives | std |
| 28 | 51.130 | 260-327 | 757 | 553(25), 323 (20), 203(100), 165 (50), 133 (30) | Caffeoyl-N-tryptophan | [26] |
| 29 | 52.061 | 260-330 | 553 | 265(70), 203(100), 163(40) | Caffeoyl-N-tryptophan-rhamnoside | [26] |