Aim:L. is a widespread European shrubby species. It is a potential source of biologically active compounds, especially antioxidants, as indicated by the dogberries’ black color. The aim of the present study was to determine the content of several quercetin derivatives in the dogberries and to evaluate phytogeographical variability of these compounds.Materials and methods:The dogberries were collected in the middle of September at two natural habitats of this species: Mt. Avala and Lake Zlatar, Serbia. The extract obtained from fresh fruits was subjected to LC-MS/MS analysis to identify and quantify the content of five quercetin derivatives: quercetin-3-Results:All of examined quercetin derivatives were detected in extract of fresh dogberries and their contents were in the following order: Q-3-O-GlcA>Q-3-O-Gal>Q-3-O-Rut>Q-3-O-Glc>Q-3-O-Rha. The average amount of Q-3-O- Rut varied significantly and depended on the geographic origin of the fruit sample.Conclusions:These results indicate that dogberries could be a potential source of natural antioxidants, and encourage further investigation of this species considering that it has not yet been exploited in either nutrition or as a source of important pharmacological compounds.
The composition of the essential oil of the twigs and needles of Taxus baccata L. from three natural populations in Serbia has been determined by GC/MS analysis. Of the 91 detected compounds, 87 were identified. The most abundant compound classes were aliphatic alcohols, terpenes, aliphatic hydrocarbons, and aliphatic aldehydes, which together comprised ca. 86.92% of the total oil composition. The dominant constituents were oct-1-en-3-ol (23.48%), (3Z)-hex-3-en-1-ol (11.46%; aliphatic alcohols), and myrtenol (11.38%; oxygenated monoterpene). The PCA of 22 selected compounds revealed differentiations of populations based on geographic distribution. The CA showed that Populations I and II from the Dinaric Alps were similar, and that Population III from the Balkan mountain system was distinct. This was the first investigation of interpopulation variability of T. baccata populations based on essential oil composition. The results of this study were compared with those of previous studies concerning volatile compounds produced by Taxus species. The results indicate that the essential oil content of T. baccata populations from this study is unique, mostly resembling the population from southeast Serbia.
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