Composition of Essential Oil from Rhododendron caucasicum
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Rhododendron caucasicum Pall. is an evergreen bush of the family Ericaceae that is endemic to the Caucasus. Its leaves are used in folk medicine to treat cardiovascular diseases and rheumatism and in poisonings, diseases of mucous membranes, bronchitis, infectious disease, and headaches. According to the literature [1, 2], the leaves contain triterpene saponins, tanning agents, flavonoids, phenolic glycosides, carboxylic and phenolic acids, polysaccharides, and essential oil (EO). The high biological activity of the EO of phylogenetically related rhododendrons , the popularity of R. caucasicum in folk medicine, and the lack of complete literature information on the composition of its EO prompted our studies.
The composition of EO from R. caucasicumcollected during fruiting in August 2011 in a subalpine meadow near Mt. Elbrus was studied. The EO was yellowish-green and was obtained from air-dried ground raw material in a Clevenger apparatus by steam distillation for 5 h. The EO was...
KeywordsLinalool Elbrus Sesquiterpene Alcohol Total Mass Spectrum Hydrocarbon C15H22
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