TL;DR: Schaftoside, an apigenin-di-C-glycoside from Silene schafta was identified by oxidative degradation and spectroscopic investigations as 6-O-β- d -glucopyranosyl-8-α- l -arabinopyranoylapigenin this article.
TL;DR: Leaf extracts from Silene schafta showed a potent inhibitory effect in some tobacco mosaic virus host plants and in four plant-virus systems and it was verified that stem, root, and seed extracts contained substances which induced high inhibition percentages.
Abstract: Leaf extracts from Silene schafta (Caryophylaceae) showed a potent inhibitory effect in some tobacco mosaic virus host plants and in four plant-virus systems. It was also verified that stem, root, and seed extracts contained substances which induced high inhibition percentages. The effect of dilution, heating, pH, lyophilization and dialysis was investigated showing that S. schafta leaf extract inhibitor was active when diluted 1:400, heated at 60 o C, submitted to pH ranging from 2 to 12, lyophilized and dialysed