Chemical composition of essential oil from aerial parts and fruits of hyssopus officinalis l., Origanum acutidens, Prangos uechritzii, H. hircinum l. and hypericum polyphyllum subsp. Polyphyllum

The chemical constituents of essential oil by hydrodistillation from the aerial parts of Hyss- opus officinalis L, Origanum acutidens and Prangos uechtrizii wild growing in Turkey were extracted by hydrodistillation, and analysed by GC and GC-MS. The major constituents of H. officinalis oil were pinocarvone (29.17%), trans-pine camphone (27.19%), β-pinene (17.63%), cis-pinocamphone (4.68%) and myrcene (2.92%). The major constituents of the essential oil of 0. acutidens were carvacrol (76.2%), p-cymene (7.4%) and borneol (3.2%). The major components of H. hircinum were α-pinene (6.96%). β-pinene (28.79%), limonene (3.60%), a-terpineol (7.20%), spathulenol (5.60%), caryophyllene oxyde (2.99%), humulene-1,2- epoxyde (4.20%), α-eudesmol (3.96%) and methyle linolenate (7.27%), while ishwarana (64.36%), aristolochene (1.50%), β-selinene (2.61%), valencene (2.08%), α-selinene (1.32%), spathulenol (2.42%), caryophyllene oxyde (2.89%) and p-eudesmol (4.30%) were recorded as the main constituents of H. polyphyllum.