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

Figure 14

MS/MS spectra of isobaric anthocyanin pairs recorded by LC-Chip/Q-TOF: Cy-diglucoside (a) and Dp-p-coumaroylmonoglucoside (b) with M⁺ at 𝑚/𝑧 611, Pn-diglucoside (c) and Pt-p-coumaroylmonoglucoside (d) with M⁺ at 𝑚/𝑧 625, and Mv-diglucoside (e) and Mv-caffeoylmonoglucoside (f) with M⁺ at 𝑚/𝑧 655 [49].

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(b)

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(f)