Research Article

Study of Grape Polyphenols by Liquid Chromatography-High-Resolution Mass Spectrometry (UHPLC/QTOF) and Suspect Screening Analysis

Table 1

Glycoside flavonol [M-H] ions identified in hybrid grapes Seibel 19881 and Seyve Villard 12-347. Identification scores calculated with respect to the theoretical mass are reported. Numbers correspond to the peaks of chromatogram in Figure 2 (adapted from de Rosso et al., 2014 [10]).

PeakFlavonolsFormulaRt (min)M-HError (ppm)
ExperimentalTheoretical
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1Syringetin O-di-hexosideC29H34O1814.00669.1684669.16721.7
2Myricetin O-di-hexosideC27H30O1814.15641.1373641.13592.1
3Myricetin hexoside-glucuronideC27H28O1914.16655.1169655.11522.5
4Myricetin 3-O-galactosideC21H20O1314.26479.0839479.08312.0
5Myricetin 3-O-glucuronideC21H18O1414.26493.0635493.06242.5
6Myricetin 3-O-glucosideC21H20O1314.31479.0844479.08312.9
7Dihydroquercetin 3-O-hexosideC21H22O1214.41465.1046465.10381.7
8RutinC27H30O1614.68609.1471609.14611.6
9Quercetin 3-O-galactosideC21H20O1215.00463.0894463.08822.8
10Quercetin 3-O-glucuronideC21H18O1315.02477.0687477.06752.6
11Laricitrin 3-O-hexosideC22H22O1315.06493.0998493.09882.1
12Quercetin 3-O-glucosideC21H20O1215.06463.0895463.08822.9
13Laricitrin 3-O-glucuronideC22H20O1415.11507.0789507.07801.4
14Kaempferol O-rhamnosyl-hexosideC27H30O1515.25593.1518593.15121.0
15Dihydroquercetin 3-O-rhamnosideC21H22O1115.34449.1097449.10891.8
16Isorhamnetin O-rhamnosyl-hexosideC28H32O1615.37623.1603623.1618−2.4
17Kaempferol 3-O-galactosideC21H20O1115.47447.0938447.09331.2
18Syringetin 3-O-galactosideC23H24O1315.58507.1147507.11440.3
19Kaempferol 3-O-glucosideC21H20O1115.65447.0943447.09332.3
20Kaempferol 3-O-glucuronideC21H18O1215.66461.0730461.07251.0
21Syringetin 3-O-glucosideC23H24O1315.73507.1156507.11442.6
22Isorhamnetin 3-O-hexosideC22H22O1215.78477.1045477.10381.3
23Isorhamnetin 3-O-glucuronideC22H20O1316.00491.0838491.08311.2
24Dihydrokaempferol 3-O-rhamnosideC21H22O1016.08433.1147433.11401.6