International Scholarly Research Notices

Review Article

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

Table 2

[M − H]⁻ and [M − 2H]²⁻ ions of proanthocyanidins with degree of polymerization (DP) 3 and 9 (na: not assigned) [50].


	Procyanidins (PCs)			Monogallates (PC1Gs)			Digallates (PC2Gs)			Trigallates (PC3Gs)			Tetragallates (PC4Gs)			Pentagallates (PC5Gs)
DP	Sdp3	Sdp9		Sdp3	Sdp9		Sdp3	Sdp9		Sdp3	Sdp9		Sdp3	Sdp9		Sdp3	Sdp9
	[M − H]⁻	[M − H]⁻	[M − 2H]²⁻	[M − H]⁻	[M − H]⁻	[M − 2H]²⁻	[M − H]⁻	[M − H]⁻	[M − 2H]²⁻	[M − H]⁻	[M − H]⁻	[M − 2H]²⁻	[M − H]⁻	[M − H]⁻	[M − 2H]²⁻	[M − H]⁻	[M − H]⁻	[M − 2H]²⁻

1	289.2	289.4		441.2	441.4
2	577.4	577.4		729.4	729.4		881.4	881.4
3	865.4	865.4		1017.6	1017.4		1169.8	1169.8
4	1153.4	1153.4		1305.8	1305.8	652.4	1457.6	1457.4			1609.2	804.4
5	1441.8	1441.6	720.4	1593.4	1593.4	796.4	1745.4	1745.2	872.6		1897.8	948.8			1024.8			1100.2
6	1729.8	1729.2	Na	1881.8	1881.6	940.8		2034.0	Na			1092.6			Na			1243.8
7	2017.2	2017.2	1009.2		2169.8	1084.2		2322.2	1161.0			1236.8			1312.6			1388.4
8			Na			1228.6			Na			1380.6			Na			1532.2
9			1296.6			1373.2			1448.6			1524.6			1601.2			1676.4
10			Na			1516.8			Na			1669.2			Na			1821.8
11			1584.0			1661.0			1737.0			1813.2			1889.2
12						1805.4			Na
13						1948.8			2025.2