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

Figure 3

trans-resveratrol (1) and principal viniferins of the vine: Z-𝜀-viniferin (2), E-𝜀-viniferin (3), E-𝜔-viniferin (4), Z-𝜔-viniferin (5), pallidol (6), E-ampelopsin D (7), E-quadrangularin A (8), 𝛼-viniferin (9), E-cis-miyabenol C (10), Z-miyabenol C (11), E-miyabenol C (12), isohopeaphenol (13), ampelopsin H (14), vaticanol C isomer (15), and hopeaphenol (16).