Content of trans-resveratrol in leaves and berries of interspecific grapevine (Vitis sp.) varieties
P. Bábíková, N. Vrchotová, J. Tříska, M. Kyselákováhttps://doi.org/10.17221/238/2008-CJFSCitation:Bábíková P., Vrchotová N., Tříska J., Kyseláková M. (2008): Content of trans-resveratrol in leaves and berries of interspecific grapevine (Vitis sp.) varieties. Czech J. Food Sci., 26: S13-S17.
The aim of this project was to study changes in the content of trans-resveratrol in berries and leaves of grapevine (Vitis sp.) infested by fungal diseases, especially by Botryotinia fuckeliana Whetzel, called as grey mildew, Plasmopara viticola (Berk. & M.A. Curtis) Berl & De Toni, called downy mildew and Uncinula necator (Schw.) Burr, called powdery mildew. In our experiments two white and two blue varieties were used. Contents of trans-resveratrol were determined in healthy and infested leaves and in healthy berries. Infested leaves of white varieties contained more trans-resveratrol than those of blue varieties. The content of trans-resveratrol in berries was lower than that in leaves.Keywords:trans-resveratrol; HPLC; wine