Heracleum sphondylium L. subsp. sphondylium (Apiaceae) of the Isle of Skye (Scotland): the chemical composition of essential oil from the flowering aerial parts

Heracleum is a large genus of plants belonging to Apiaceae family that includes about 90 species of biennial or perennial herbs. Several species of this genus are extensively used in various traditional medicines and, despite their content in toxic furanocoumarins, also as food. In the present study the chemical composition of the essential oil (EO) from flowering aerial parts of Heracleum sphondylium L. subsp. sphondylium, a plant distributed in Europe and North-West Africa, collected in the Isle of Skye (Scotland), was analyzed by GC and GC-MS. No one report has been previously published on any British accession. The result showed the presence of large quantity of sesquiterpene hydrocarbons and aliphatic esters, with bicyclogermacrene (31.6%) and octyl acetate (29.5%), by far, as the most abundant components. Considerations with respect all the other EOs of H. sphondylium taxa, studied so far, were carried out.