Table 6.
Compounds identified from the phenolic fraction of D. tortuosa by the HPLC-MS negative mode.
| No. | Rt (min) | Identified compound (M) | |||
|---|---|---|---|---|---|
| % | [M-H]− | MS/MS | |||
| 1 | 5.62 | 3.2 | 299 | MS2 [137]: (100) [M-H-Glc], 93 [M-H-Glc-CO2] | 4-Hydroxybenzoic acid 4-O-glucoside |
| 2 | 7.44 | 6.18 | 477 | MS2 [301]: (100), 151, 135 | Quercetin 3-O-glucuronide |
| 3 | 9.28 | 2.20 | 341 | 303, 257, 193 | Hesperidin derivative (342) |
| 4 | 9.63 | 1.04 | 447 | MS2 [447]: 429 (2), 415 (2), 285 (100); MS3 [285]: 270 (100), 257 (4), 253 (40), 229 (5), 225 (16), 137 (5) | Kaempferol glucoside |
| 5 | 15.65 | 5.6 | 447 | MS2 [300.9]: 178.8, 150.8, 106.9, 120.8, 272.9, 228.9, 256.8 | Quercetin 3-O-β-rhamnoside |
| 6 | 20.25 | 7.5 | 593 | MS2: 285 (100), 257 (22) MS3 [593 ⟶ 285]: 257 | Kaempferol-3-O-rutinoside |
| 7 | 23.76 | 8.08 | 301 | 257 (9100), 247, 201 | Quercetin |
| 8 | 24.6 | 8.25 | 609 | 300 (100), 271, 255, 151 | Rutin |
| 9 | 26.57 | 102.5 | 623 | 315 (100), 300, 271, 255 | Isorhamnetin-3-O-rutinoside |
| 10 | 27.60 | 5.62 | 316 | MS2 [301] (100), 272, 256, 154, 107 | Isorhamnetin |
| 11 | 28.03 | 1.78 | 179 | MS2: 161 (100), 135 | Caffeic acid |
| 12 | 31.27 | 15.5 | 285 | 239, 69 (100), 187.22, 143.21 | Kaempferol |