Table 4.
The MS2 data of compounds detected in Millefolii herba ethanolic extract (K EtOH), Serpylli herba ethanolic extract (Th EtOH), and Arctii lappae folium ethanolic extract (All EtOH). NL—neutral loss detected corresponding to the cleavage of sugar or phenolic acid.
| No. | Rt (min) | Compound | Max. UV (nm) | (M − H)− m/z | MS2 ions m/z | NL Detected Amu |
|
|---|---|---|---|---|---|---|---|
| K EtOH | 1 | 8.1 | Caffeoylquinic acid | 216 | 353 | 191 | - |
| 2 | 15.8 | Quercetin O-hexoside | 202, 332 | 463 | 301 | 162 | |
| 3 | 18.8 | Luteolin O-hexoside Luteolin O-glucuronide |
204, 343 | 447 461 |
285 285 |
162 176 |
|
| 4 | 21.4 | Dicaffeoylquinic acid | 213, 329 | 515 | 353 | 162 | |
| 5 | 21.8 | Dicaffeoylquinic acid Apigenin O-hexoside |
204, 329 | 515 431 |
353 269 |
162 162 |
|
| 6 | 22.9 | Dicaffeoylquinic acid | 213, 328 | 515 | 353 | 162 | |
| Th EtOH | 1 | 22.9 | Quercetin O-glucuronide | 212, 281, 343 | 477 | 301 | 176 |
| 2 | 26.2 | Luteolin O-glucuronide | 271, 338 | 461 | 285 | 176 | |
| 3 | 30.2 | Apigenin O-glucuronide | 267, 334 | 445 | 269 | 176 | |
| 4 | 31.4 | Rosmarinic acid | 197, 328 | 359 | 197 | 162 | |
| 5 | 32.6 | Salvianolic acid K | 198, 323 | 555 | 493, 359, 161 | - | |
| 6 | 34.1 | Salvianolic acid (H, I or J) | 198, 325 | 537 | 493, 359, 161- | - | |
| All EtOH | 1 | 8.0 | Caffeoylquinic acid | 216,326 | 353 | 191 | - |
| 2 | 21.1 | Dicaffeoylmaloylquinic acid | 216, 328 | 631 | 515, 469, 353 | 162 | |
| 3 | 23.0 | Dicaffeoylsuccinoylquinic acid | 216, 329 | 615 | 515. 453, 353 | 162 | |
| 4 | 25.0 | Dicaffeoylsuccinoylquinic acid | 217, 328 | 615 | 515, 453, 353, 191 | 162 | |
| 5 | 26.7 | Dicaffeoyldisuccinoylquinic acid | 218, 329 | 715 | 553 | 162 | |
| 6 | 29.4 | Tricaffeoylsuccinoylquinic acid | 218, 327 | 777 | 615 | 162 | |