Essential Oil Composition ofCentaurea pullataL.

Abstract

The essential oil composition of Centaurea pullata L. was obtained by water distillation, yielding 0.03% of oil on dry weight basis. The oil composition was analyzed by a combination of GC and GC/MS techniques. Sixty components, representing 83.1% of the total oil, were identified, six of which have not been previously reported in Centaurea oils. The principal constituents were identified as caryophyllene oxide (27.0%), phytol isomer (16.5%) and 6,10,14-trimethyl 2-pentadecanone (14.9%). These results show remarkable qualitative and quantitative differences with previously reported studies for Centaurea species.

Essential Oil Composition ofCentaurea stenolepisKerner. from Turkey

“…Previous reports on the essential oil composition of Centaurea species indicate main components as caryophyllene 14,15 , spathulenol 16,17 , eudesmol [17][18][19] , germacrene 16,20-24 as sesquiterpenes; hexadecanoic acid 5,18,[25][26][27][28][29][30][31][32][33][34][35] , tetradecanoic acid 29 , dodecanoic acid 26,29,33 as fatty acids; heptacosane 5,17,22,25,31,35,36 , tricosane 22,31,35 , pentacosane 22 , nonacosane 5 as higher alkanes and pinenes 16 , terpinenes 16 , carvacrol 29 as monoterpenes. Until now 42 taxa of Centaurea were investigated for essential oil composition from Turkey; main components of these oils were given in Table 1.…”

Essential Oil Composition of Centaurea atropurpurea and Centaurea orientalis Inflorescences from the Central Balkans – Ecological Significance and Taxonomic Implications

“…Centaurea species are known to synthesize volatile components (essential oils) . Essential oils have a high structural diversity since the majority of components are terpenes .…”

“…Essential oils, and terpenes as their major components, are often used in chemotaxonomic research , due to the strong genetic control of biosynthesis of terpenes . There are many papers available on the essential oil composition . However, at present, the studies on fresh capitula essential oil are limited to only few species , even though this region could have significant importance especially in relation to pollinators.…”