Composition of essential oils of some lipidote Rhododendrons |
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| Institution: | 1. Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons (ER-C) and Peter Grünberg Institute (PGI), Forschungszentrum Jülich, Jülich D-52425, Germany;2. Department of Physics and Astronomy, University of Bologna, Viale B. Pichat 6/2, Bologna 40127, Italy;3. CNR-Institute of Nanoscience-S3, Via G. Campi 213/a, Modena 41125, Italy;4. Department of Physics, University of Ottawa, 25 Templeton Street, Ottawa, Ontario K1N6N5, Canada |
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| Abstract: | Essential oils from leaves of 43 species of Rhododendron comprising 21 subsections were generally complex, and contained a number of compounds that were not identified. Caryophyllene, humulene, and one or more eudesmol isomers were the most commonly identified constituents. α-Pinene was the major component in eight of the oils, and germacrone was the major component in five of the oils. Monoterpenes were the major components of the oils in eight of the 12 species of subsection Triflora that were examined. Sesquiterpenes were major components in about 80% of the other 31 species. |
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