Table 2.
Compounds identified in polyphenol-rich extracts from medicinal plants.
| Medicinal Plant | Retention Time (min) | Molecular Weight (Da) | Parent Ions | Fragment Ions | Identified Compound |
|---|---|---|---|---|---|
| A. borbonica | 2.5 | 354 | 353 | 191 | Chlorogenic acid isomer |
| 3.5 | 354 | 353 | 191 | Chlorogenic acid | |
| 3.7 | 354 | 353 | 191, 173 | Chlorogenic acid isomer | |
| 5.7 | 610 | 609 | 301 | Quercetin-hexoside-ramnoside | |
| 6.0 | 594 | 593 | 447, 285 | Kaempferol-hexoside-ramnoside | |
| 6.2 | 594 | 593 | 455, 285 | Kaempferol-hexoside-ramnoside | |
| 6.4 | 516 | 515 | 353, 191 | Dicaffeoylquinic acid | |
| 6.6 | 516 | 515 | 353, 191 | Dicaffeoylquinic acid | |
| 6.9 | 516 | 515 | 353, 191 | Dicaffeoylquinic acid | |
| A. triplinervis | 3.2 | 154 | 153 | 109 | Protocatechuic acid |
| 4.4 | 180 | 179 | / | Caffeic acid | |
| 5.0 | 356 610 |
355 609 |
193 301, 179 |
Feruoyl-hexoside Quercetin-hexoside-ramnoside |
|
| 5.2 | 464 | 463 | 301 | Quercetin-hexoside | |
| 5.5 | 550 | 549 | 505, 463, 301 | Quercetin-hexoside-malonate | |
| 6.1 | 696 | 695 | 533, 515, 371, 209 | Tricaffeoyl-glucarate | |
| 6.3 | 194 | 193 | / | Isoferulic acid | |
| 6.8 | 190 | 191 * | 163, 133 * | Ayapin | |
| 7.4 | 176 | 177 * | 145, 133, 121 * | Ayapanin (Herniarin) | |
| T. bentzoe | 1.2 | 482 | 481 | 301 | Hexahydroxydiphenoyl (HHDP)-hexoside |
| 1.4 | 482 | 481 | 301 | HHDP-hexoside | |
| 2.3 | 170 | 169 | 125 | Gallic acid | |
| 2.7 | 782 | 781 | 721, 601, 299, 271 | Punicalin | |
| 3.0 | 934 | 933 | / | Galloyl-punicalin | |
| 3.2 | 934 | 933 | 915, 781, 721, 601 | Galloyl-punicalin | |
| 3.4 | 470 | 469 | 425 | Valoneic acid dilactone | |
| 3.5 | 1084 | 1083 | 781, 601 | Punicalagin | |
| 3.8 | 1084 | 1083 | 781, 601 | Punicalagin | |
| 3.9 | 186 | 1085 | 783, 601, 451 | Digalloyl-gallagyl-hexoside | |
| 4.0 | 634 | 633 | 463, 301 | HHDP-galloyl-hexoside | |
| 4.1 | 1086 | 1085 | 933, 721, 601 | Digalloyl-punicalin | |
| 4.3 | 786 | 785 | 633, 483 | HHDP-digalloyl-hexoside | |
| 4.9 | 938 | 937 | 785, 767, 741, 465, 301 | Tri-galloyl-HHDP-glucose | |
| 5.2 | 302 | 301 | / | Ellagic acid | |
| 5.3 | 940 | 939 | 787, 769, 617 | Pentagalloyl-hexoside | |
| D. viscosa | 3.8 | 1152 | 1151 | 981, 863, 711 | Procyanidin tetramer type A |
| 4.2 | 578 | 557 | 451, 425 | Procyanidin dimer B2 | |
| 4.6 | 864 | 863 | 711, 693, 559 | Procyanidin trimer type A | |
| 5.4 | 624 | 623 | 315 | Isorhamnetin-hexoside-rhamnoside | |
| 9.0 | 344 | 343 | 329, 301, 283 | 5,7-Dihydroxy-3,6,4′-trimethoxyflavone (Santin) |
Polyphenol-rich extracts from medicinal plants were analyzed by UPLC-ESI-MS-MS at 280 nm. The phytochemicals were detected according to their retention time and the m/z ratio of their parent ions [M − H]− and fragments at negative mode, except for the parent ions [M + H]+ and fragments that were detected at positive mode and indicated by *.