. The main stilbenes identified are piceatannol, scirpusin A, polydatin and 3,5,4′-trihydroxystilbene-2-C-glucoside. Cis- and trans-resveratrol and cis- and trans-piceid acids are also present (Ha et al., 2009; (Huang and Lin, 1999; Zhao et al., 2011). Information on the stilbenes...