Endemic Balkan parsnip Pastinaca hirsuta: the chemical profile of essential oils, headspace volatiles and extracts.

The present study for the first time reports the chemical composition of the endemic Balkan parsnip Pastinaca hirsuta Pančić essential oil and headspace (HS) volatiles, obtained from fresh roots, stems, flowers and fruits, as well as fresh fruits n-hexane and diethyl ether extracts. According to GC-MS and GC-FID analyses, β-Pinene was one of the major components of the root and stem HS volatiles (50.6-24.1%). (E)-β-Ocimene was found in a significant percentage in the stem and flowers HS volatiles (31.6-57.3%). The most abundant constituent of the fruit HS, flower and fruit essential oils and both extracts was hexyl butanoate (70.5%, 31.1%, 80.4%, 47.4% and 52.7%, respectively). Apiole, accompanied by myristicin and (Z)-falcarinol, make up over 70% of the root essential oils. γ-Palmitolactone was the major component of the stem essential oils (51.9% at the flowering stage and 45.7% at the fruiting stage). Beside esters as dominant compounds, furanocoumarins were also identified in extracts. (Dis)similarity relations of examined plant samples were also investigated by the agglomerative hierarchical cluster analysis. The obtained results show there is difference in the composition of volatile components from different plant organs, while the stage of growth mainly affects the quantitative volatiles composition.