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

Table 15

Compounds identified by DIPS and MS/MS in 12 wines at different aging stages.

Compound	m/z		Loss Da
	M^+	MS/MS ions
Cy-glu	449	287	−162
Pn-glu	463	301	−162
Dp-glu	465	303	−162
Pt-glu	479	317	−162
Vitisin B-Pn-glu	487	325	−162
Vitisin B-Dp-glu	489	327	−162
Mv-glu	493	331	−162
Vitisin B-Pt-glu	503	341	−162
Pn-glu-Ac	505	301	−204
Dp-glu-Ac	507	303	−204
Pt-glu-Ac	521	317	−204
Vitisin A-Pn-glu	531	369	−162
Vitisin A-Dp-glu	533	371	−162
Mv-glu-Ac	535	331	−204
Vitisin A-Pt-glu	547	385	−162
Vitisin B-Mv-glu-Ac	559	355	−204
Vitisin A	561	399	−162
4-Vinylphenol-Pn-glu	579	417	−162
4-Vinylphenol-Dp-glu	581	419	−162
Cy-glu-pcoum	595	287	−308
4-Vinylphenol-Pt-glu	595	433	−162
4-Vinylcatechol-Dp-glu	597	435, 303	−162
4-Vinylphenol-Mv-glu	609	447	−162
Pn-glu-pcoum	609	301	−308
Dp-glu-pcoum	611	303	−308
4-Vinylcatechol-Mv-glu (Pinotin A)	625	463	−162
Mv-glu-pcoum	639	331	−308
4-Vinylguaiacol-Mv-glu	639	477	−162
4-Vinylphenol-Mv-glu-Ac	651	447	−204
Mv-diglu (IS)	655	493, 331	−162
4-Vinylcatechol-Mv-glu-Ac	667	463	−204
Vitisin A-Pt-glu-pcoum	693	385	−308
Vitisin A-Mv-glu-pcoum	707	399	−308
4-Vinylphenol-Pt-glu-pcoum	741	433	−308
Cat-Pn-glu	751	589	−162
Cat-Dp-glu	753	591	−162
4-Vinylphenol-Mv-glu-pcoum	755	447	−308
4-Vinylcatechol-Pt-glu-pcoum	757	449	−308
Cat-Et-Cy-glu	765	603	−162
GCat-Pn-glu or Cat-Pt-glu	767	605	−162
4-Vinylcatechol-Mv-glu-pcoum	771	463, 331	−308
Cat-Mv-glu	781	619, 467, 331	−162
GCat-Pt-glu	783	621	−162
Cat-Dp-glu-Ac	795	591, 507	−204
Cat-Et-Pt-glu	795	633, 507, 343, 317	−162
GCat-Mv-glu	797	635, 331	−162
4-VinylCat-Mv-glu	805	643	−162
Cat-Et-Mv-glu	809	657, 647, 357, 331	−162
Cat-Pt-glu-Ac	809	605, 519, 317	−204
GCat-Et-Pt-glu	811	649, 343	−468
Cat-Mv-glu-Ac	823	619, 535, 331	−204
GCat-Et-Mv-glu	825	663, 331	−162
GCat-Mv-glu-Ac	839	635	−204
GCat-Et-Mv-glu-Ac	867	663	−204
Cat-Pn-glu-pcoum	897	589, 301	−308
GCat-Dp-glu-pcoum	915	607	−308
Cat-Mv-glu-pcoum	927	619	−308
GCat-Pt-glu-pcoum	929	621	−308
GCat-Mv-glu-pcoum	943	635	−308
Cat-Et-Mv-glu-pcoum	955	647	−308

M⁺: molecular ion; Cat: (epi)catechin; GCat: gallo(epi)catechin; Ac: acetyl; pcoum: p-coumaroyl; Et: ethyl; Dp: delphinidin; Cy: cyanidin; Pt: petunidin; Pn: peonidin; Mv: malvidin; glu: glucoside [70].