Chemical compositions of the essential oils of stems, leaves and flowers of Prangos acaulis (Dc) Bornm.

Chemical composition of the essential oils obtained of stems, leaves and flowers of the Prangos acaulis, at full flowering stage were isolated by hydrodistilation method and investigated by GC/MS. A total of 11 compounds constituting 100% of stems oil, eighteen compounds constituting 99.74% of leaves oil and 22 compounds constituting 98.18% of flowers oil have been identified and quantified. The major components of stems oil were 3-ethylidene-2-methyl-1-hexen-4-yne (56.8%) and alpha-pinene (34.2%). The major components of leaves oil were a-pinene (39.54%), 3-ethylidene-2-methyl-1-hexen-4-yne (37.94%) and alpha-terpinene (10.9%) and the major components of flowers oil were alpha-pinene (25.04%), 3-ethylidene-2-methyl-1-hexen-4-yne (23.51%), alpha-terpinene (17.26%) and limonene (13.64%).