Stilbenoid Profiles of Canes from <i>Vitis</i> and <i>Muscadinia</i> Species

Abstract

We present stilbenoid profiles of canes from 16 grapevines. Fifteen stilbenoids were obtained through isolation and structure identification using MS, NMR, and [α]_D or as commercial standards. An HPLC–UV method for the simultaneous quantification of nine of these stilbenoids was developed and applied to canes of <i>Vitis amurensis</i>, <i>Vitis arizonica</i>, <i>Vitis berlandieri</i>, <i>Vitis betulifolia</i>, <i>Vitis cinerea</i>, <i>Vitis</i> × <i>champini</i>, <i>Vitis</i> × <i>doaniana</i>, <i>Vitis labrusca</i>, <i>Vitis candicans</i> (syn. <i>Vitis mustangensis</i>), <i>Vitis riparia</i>, <i>Vitis rupestris</i>, <i>Vitis vinifera</i>, <i>Muscadinia rotundifolia</i>, and a <i>V. vinifera</i> × <i>M</i>. <i>rotundifolia</i> hybrid. In these species, <i>E</i>-ampelopsin E, <i>E</i>-amurensin B, <i>E</i>-piceid, <i>E</i>-piceatannol, <i>E</i>-resveratrol, <i>E</i>-resveratroloside, <i>E</i>-ε-viniferin, <i>E</i>-ω-viniferin, and <i>E</i>-vitisin B were quantified, when found in sufficient amounts. Total concentrations ranged from ∼2.2 to 19.5 g/kg of dry weight. Additional stilbenoids, <i>E</i>-3,5,4′-trihydroxystilbene 2-<i>C</i>-glucoside, <i>Z</i>-ampelopsin E, <i>Z</i>-<i>trans</i>-miyabenol C, <i>E</i>-<i>trans</i>-miyabenol C, scirpusin A, and <i>Z</i>-vitisin B, were identified but not quantified. Our results indicate that canes, particularly those of non-<i>vinifera</i> species, have substantial quantities of valuable, health-promoting stilbenoids