Composition And Antimicrobial Activity Of The Essential Oil Of Heracleum Lanatum Michx. From Uttarakhand Himalaya

The essential oil from the flowering aerial parts of Heracleum lanatum Michx. family Apiaceae was obtained by hydrodistillation and analysed by combination of GC (RI) and GC-MS. The chemical composition of the isolated oil is reported for the first time. Sixty five compounds were identified representing 96.95% of the total oil. The chemical composition of the isolated oil was characterised by a high proportion of monoterpene hydrocarbons (39.42%), among which β-phellandrene (14.01%), sabinene (6.75%) and (E)-β-ocimene (6.45%) were the major compounds. The sesquiterpene hydrocarbons (22.50%) represented the second major fraction of the oil followed by the oxygenated sesquiterpenes (21.42%). Furthermore, antimicrobial activity of the essential oil was evaluated using agar well diffusion method.