International Scholarly Research Notices

Review Article

Recent Applications of Mass Spectrometry in the Study of Grape and Wine Polyphenols

Table 4

Nonanthocyanin phenolic compounds identified by LC/ESI-MS in wines from Vitis vinifera varieties Tempranillo, Graciano, Cabernet Sauvignon, and Merlot. Principal mass fragments and maximum UV-Vis absorption wavelengths are reported. (s): shoulder [54].
RT (min)Compound(m/z) (nm)
[M − H]−Fragments
7.6Gallic acid169125272
14.0Protocatechuic acid153109294, 260
15.7Dihydroxyphenylethanol153 280
16.7trans-caffeoyltartaric acid311179330, 298(s)
19.22,3-Dihydroxy-1-(4-hydroxy-3-methoxyphenyl)-propan-1-one211 310, 280
19.5Methyl gallate183169, 125272
20.5Tyrosol137 275
22.3(epi)gallocatechin-(epi)catechin dimer593425276
22.7Procyanidin B3577425, 289280
23.0Procyanidin B1577425, 289280
24.2trans-coumaroyl-tartaric acid295163313
27.3(+)-catechin289 279
28.0Procyanidin T2865713, 577, 289280
28.3trans-feruryltartaric acid325193329, 301(s)
28.7Hexose ester of vanillic acid329167nd
29.0Procyanidin T3865713, 577, 289280
29.7Vanillic acid167 289, 262
30.5Procyanidin B4577425, 289283
31.3trans-caffeic acid179135323
33.0Hexose ester of trans-p-coumaric acid (1)325163, 145311
33.6Procyanidin B2577425, 289280
34.6Syringic acid197 277
37.0Hexose ester of trans-p-coumaric acid (2)325163, 145312
38.7(−)-epicatechin289 279
40.2Trimeric procyanidin865713, 577, 289280
41.3Ethyl gallate197169, 125273
42.2Procyanidin C1865713, 577, 289282
43.2trans-p-coumaric acid163119309
43.5Trimeric procyanidin865713, 577, 289280
43.8Procyanidin dimer gallate729577278
44.0Procyanidin B5577425, 289280
48.5Myricetin-3-O-glucuronide493317349, 300(s), 261
50.1Myricetin-3-O-glucoside479317349, 300(s), 261
51.3Epicatechin-3-O-gallate441289, 169277
53.2trans-resveratrol-3-O-glucoside389227306(s), 319
55.2Ellagic acid301 368
57.2Quercetin-3-O-galactoside463301354, 300(s), 256
57.7Quercetin-3-O-glucuronide477301354, 300(s), 256
58.2Astilbin449303288
58.7Quercetin-3-O-glucoside463301354, 300(s), 256
60.6Tryptophol160 279
62.4Kaempferol-3-O-glucoside447285346, 300(s), 265
67.6Myricetin317 371, 300(s), 254
68.9cis-resveratrol-3-O-glucoside389227285
71.9trans-resveratrol227 306, 319(s)
92.7Quercetin301 369, 300(s), 255
95.7cis-resveratrol227284