International Scholarly Research Notices

Review Article

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

Table 8

Anthocyanins identified in Clinton grape skins extract by direct-ESI/IT-MS and LC-Chip/ESI-QTOF-MS analysis performed in positive-ion mode (LC-Chip retention times are reported). Data are expressed as relative percentage of M⁺ signal of compound with respect to M⁺ signal of Mv-3-O-monoglucoside at 611 and 493.


		Direct-ESI/IT-MS	LC-Chip/ESI-Q-TOF-MS
Compound	MW	M⁺ height %	RT (min)	M⁺ area %
	MW	Relative to Mv monoglucoside	RT (min)	Relative to Mv monoglucoside

Cyanidin-3-O-monoglucoside	449	9	3.794	11
Peonidin-3-O-monoglucoside	463	33	3.869	52
Delphinidin-3-O-monoglucoside	465	35	3.744	38
Petudinin-3-O-monoglucoside	479	44	3.794	39
Cyanidin-3-O-(6-O-acetyl)monoglucoside	491	2	4.095	tr
Malvidin-3-O-monoglucoside	493	100	3.869	100
Peonidin-3-O-(6-O-acetyl)monoglucoside	505	10	4.070	6
Delphinidin-3-O-(6-O-acetyl)monoglucoside	507	6	3.944	2
Petudinin-3-O-(6-O-acetyl)monoglucoside	521	23	3.995	5
Malvidin-3-O-(6-O-acetyl)monoglucoside	535	36	4.045	30
Cyanidin-3-(6-O-p-coumaryl)monoglucoside	595	3	4.220	5
Peonidin-3-(6-O-p-coumaryl)monoglucoside	609	6	4.295	18
Cyanidin-3,5-O-diglucoside	611	19 (m/z 611)	3.644	3
Delphinidin-3-(6-O-p-coumaryl)monoglucoside	611		4.170	15
Peonidin-3,5-O-diglucoside	625	14 (m/z 625)	3.719	3
Petudinin-3-(6-O-p-coumaryl)monoglucoside	625		4.220	3
Delphinidin-3,5-O-diglucoside	627	35	3.594	2
Malvidin-3-(6-O-p-coumaryl)monoglucoside	639	39	4.270	48
Petudinin-3,5-O-diglucoside	641	16	3.669	14
Malvidin-3,5-O-diglucoside	655	24 (m/z 655)	3.719	26
Malvidin-3-(6-O-caffeoyl)monoglucoside	655		4.170	1
Cyanidin-3-(6-O-p-coumaryl),5-O-diglucoside	757	2	3.995	1
Delphinidin-3-(6-O-p-coumaryl),5-O-diglucoside	773	2	3.944	2
Petudinin-3-(6-O-p-coumaryl),5-O-diglucoside	787	2	3.995	3
Malvidin-3-(6-O-p-coumaryl),5-O-diglucoside	801	2	4.045	3

tr: trace [49].