Volatile components from aerial parts of Centaurea spinosociliata Seenus ssp. cristata (Bartl.) Dostal and Centaurea spinosociliata Seenus ssp. spinosociliata growing wild in Croatia

摘要

U ovom radu opisane su hlapljive uljne komponente dobivene iz nadzemnih dijelova dvije vrste Asteraceae koje divlje rastu u Hrvatskoj: Centaurea spinosociliata ssp. cristata (syn. Centaurea cristata Bartl. subsp. rabenhorsti-ana (Sch.Bip.) Nyman) (CSC) i C. spinosociliata ssp. spinosociliata (CSS). Hlapljive komponente dobivene su hidrodestilacijom odabranih biljaka, a zatim su odre?ene sustavom GC-MS s dvije kolone od silikatnih kapilara razli?ite polarnosti. Dobiveni udjeli ulja u suhoj tvari su 0,08 % (CSC) i 0,07 % (CSS). U uljima su ukupno identificirane 73 razli?ite tvari koje zajedno sudjeluju s 90,8 % (CSC) i 92,8 % (CSS) u ukupnoj masi ulja, a karakterizirane su uglavnom kao ugljikohidrati (37,9 %; 30,4 %), seskviterpenski ugljikohidrati (14,1 %; 29,1 %), te ok-sigenizirani seskviterpeni (22,2 %; 13,1 %). Glavne komponente u uzorcima bile su heptakozan (11,2 %; 12,6 %), ciklosativen (2,1 %; 6,4 %), te kariofilen oksid (10,2 %; 4,7 %). Monoterpeni, masne kiseline i fenoli bili su odsutni ili prisutni u vrlo niskim koli?inama u oba ulja. Ukratko je razmotrena i kemotaksonomija podroda Acrolophus.%The paper reports on the volatile components oil from aerial parts of two Asteraceae growing wild in Croatia: Centaurea spinosociliata ssp. cristata (syn. Centaurea cristata Bartl. subsp. rabenhorsti-ana (Sch.Bip.) Nyman) (CSC) and C. spinosociliata ssp. spinosociliata (CSS). The volatile components were obtained by hydrodistillation from selected plants and were determined by the GC-MS system on two fused-silica capillary columns of different polarity. The oil content was 0.08 % (CSC) and 0.07 % (CSS) on a dry weight basis. Altogether 73 compounds were identified accounting for 90.8 % (CSC) and 92.8 % (CSS) of the total oil, that were characterized mainly by hydrocarbons (37.9 %; 30.4 %), ses-quiterpene hydrocarbons (14.1 %; 29.1 %), oxygenated sesquiterpenes (22.2 %; 13.1 %). The major components of the samples were heptacosane (11.2 %; 12.6 %), cyclosativene (2.1 %; 6.4 %), caryophyllene oxide (10.2 %; 4.7 %). Monoterpenes, fatty acids and phenolic compounds were absent or present in low amount in both oils. The chemotaxonomy of the subgenus Acrolophus is briefly discussed.