Table 2 Identification of phenolic compounds in Prunus serotina flowers in negative ionization with HPLC–MS and MS2/MS3
From: Phenolic composition of leaf and flower extracts of black cherry (Prunus serotina Ehrh.)
Peak No.a | tR (min)b | λ(nm) | Tentative identification | [M-H] (m/z) | MS2(m/z) | MS3(m/z) |
|---|---|---|---|---|---|---|
1 | 9.53 | 294,324 | Caffeic acid hexoside | 341 | 179,161 | 135 |
1 | 9.53 | 324,275 | p-coumaric acid hexoside 1 | 325 | 163,119 | Â |
2 | 10.83 | 340,280 | Procyanidin dimer 1 | 577 | 425,407,289 | Â |
3 | 11.38 | 323,274 | p-coumaric acid hexoside 2 | 325 | 163,119 | Â |
4 | 12.41 | 234,279 | Catechin | 289 | 245 | Â |
4 | 12.41 | 234,278 | Procyanidin trimer 1 | 865 | 577,451,425,407,289 | Â |
5 | 12.75 | 234,328 | 5-caffeoylquinic acid 1 | 353 | 191,179,135 | 173,127,85 |
5 | 12.75 | 322,275 | p-coumaric acid hexoside 3 | 325 | 163,119 | Â |
6 | 13.51 | 234,279 | Procyanidin dimer 2 | 577 | 425,407,289 | Â |
7 | 14.43 | 321 | Caffeic acid | 179 | 135 | Â |
8 | 14.72 | 234,279 | Epicatechin | 289 | 245 | Â |
9 | 15.02 | 285,325 | Eriodictyol hexoside | 449 | 287 | Â |
10 | 16.23 | 312 | 5-p-coumaroylquinic acid 1 | 337 | 191,173,163 | Â |
10 | 16.23 | 235,278 | Procyanidin trimer 2 | 865 | 577,425,407,289 | Â |
11 | 17.21 | 322 | 5-feruloylquinic acid | 367 | 191,173 | Â |
12 | 17.57 | 311 | 5-p-coumaroylquinic acid 2 | 337 | 191,163,173 | Â |
13 | 17.90 | 256,355 | Isorhamnetin dihexoside | 639 | 477 | 315 |
14 | 18.61 | 256,358 | Quercetin rhamnoside hexoside | 609 | 463 | 301 |
14 | 18.61 | 255,363 | Isorhamnetin hexoside pentoside hexoside | 771 | 609,477 | 315 |
14 | 18.61 | 255,355 | Quercetin hexoside rutinoside | 771 | 609 | 301 |
15 | 19.02 | 266,335 | Apigenin hydroxyhexoside | 449 | 269 | Â |
15 | 19.02 | 265,348 | Kaempferol dihexoside | 609 | 447 | 285 |
16 | 19.77 | 255,355 | Quercetin-3-rutinoside | 609 | 301 | Â |
17 | 20.16 | 265,347 | Kaempferol rhamnoside hexoside 1 | 593 | 447 | 285 |
18 | 20.54 | 255,355 | Quercetin-3-glucoside | 463 | 301 | Â |
18 | 20.54 | 264,345 | Kaempferol rhamnoside hexoside 2 | 593 | 447 | 285 |
19 | 21.47 | 255,354 | Quercetin dipentoside | 565 | 433 | 301 |
20 | 21.60 | 264,345 | Kaempferol-3-rutinoside | 593 | 285 | Â |
20 | 21.60 | 356,255 | Quercetin-3-xyloside | 433 | 301 | Â |
20 | 21.60 | 255,354 | Isorhamnetin-3-rutinoside | 623 | 315 | Â |
21 | 21.87 | 355,255 | Quercetin-3-arabinopyranoside | 433 | 301 | Â |
21 | 21.87 | 256,354 | Isorhamnetin hexoside 1 | 477 | 315 | Â |
21 | 21.87 | 266,346 | Kaempferol hexoside | 447 | 285 | Â |
22 | 22.32 | 355,255 | Quercetin-3-arabinofuranoside | 433 | 301 | 28 |
22 | 22.32 | 256,354 | Isorhamnetin hexoside 2 | 477 | 315 | Â |
23 | 22.82 | 246,316 | Dicaffeoylquinic acid | 515 | 353 | 179,173 |
24 | 23.45 | 265,349 | Kaempferol pentoside 1 | 417 | 285 | Â |
24 | 23.45 | 255,355 | Quercetin acetyl hexoside | 505 | 463 | 301 |
25 | 24.00 | 256,358 | Isorhamnetin pentoside 1 | 447 | 315 | Â |
25 | 24.00 | 265,349 | Kaempferol pentoside 2 | 417 | 285 | Â |
26 | 24.36 | 346 | Syringetin hexoside | 507 | 345 | Â |
26 | 24.36 | 256,357 | Isorhamnetin pentoside 2 | 447 | 315 | Â |