Abstract
Abstract This investigation was aiming at the phytochemical characterisation of Origanum vulgare subsp. vulgare from Austria. To study the qualitative and quantitative composition of essential oil compounds 374 individual plants were analysed via GC. The volatiles of Austrian O. vulgare subsp. vulgare were found to be complex mixtures of 53 mono- and sesquiterpenes. Among the sesquiterpenes β -caryophyllene, germacrene D, E-E- α -farnesene, germacrene D-4-ol and caryophyllene oxide were frequently present in higher amounts. The monoterpenes were mainly made up of sabinyl-compounds [mainly sabinene (up to 48.4%) and cis -sabinene hydrate (up to 57.8%)] and/or cymyl-compounds [mainly p -cymene (up to 49.7%), γ -terpinene (up to 21.5%) and carvacrol (up to 32.9%)] that were accompanied by usually smaller amounts of bornyl-compounds and acyclic compounds. Some exceptional (in O. vulgare rare) chemotypes were detected. The essential oil content of Austrian O. vulgare subsp. vulgare ranged between 0.1 and 1.8%. The content of rosmarinic acid was analysed by HPLC and ranged from 0.6 mg/g dry mass up to 37.2 mg/g dry mass. No arbutin could be detected in the analysed populations.
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