Charalampia Kloukina, Ekaterina-Michaela Tomou, Helen Skaltsa**
Department of Pharmacognosy & Chemistry of Natural Products, School of Pharmacy, National and Kapodistrian University of Athens, Athens, Greece
*Corresponding author. Email: skaltsa@pharm.uoa.gr
Abstract
In this present work, essential oil composition of cultivated commercially available Sideritis raeseri Boiss. & Heldr. and Sideritis scardica Griseb. from three different restricted areas of Kozani (central Greece) were studied. The essential oils were obtained by hydrodistillation in a modified Clevenger-type apparatus, and their analyses were performed by GC-MS. Monoterpene hydrocarbons constituted the main fraction of S. raeseri from Polirraxo (Kozani) and of S. scardica from Chromio (Kozani), while sesquiterpene hydrocarbons were the main group of S. raeseri from Metamorfosis (Kozani) and S. scardica from Metamorfosis (Kozani). Despite the different cultivations, some constituents were found even in different percentages in both samples of S. scardica: α-pinene, -pinene, cis-caryophyllene, bicyclogermacrene and germacrene D. It is noteworthy that the two samples of S. raeseri have totally different main constituents, which could be related to the different cultivation conditions, as well as to the known tendency of some Sideritis species to hybridize, which suggests further research.
Keywords
Sideritis raeseri, Sideritis scardica, cultivation, composition of volatiles
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