Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

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Original Articles: 2010 Vol: 2 Issue: 6

Essential oil composition of Hypericum perforatum L. and Hypericum scabrum L. growing wild in Tajikistan

Abstract

The essential oils obtained by hydrodistillation fr om the aerial parts of Hypericum perforatum L. and Hypericum scabrum L. from plants growing wild i n Tajikistan were analyzed by GC-MS. Sixty-six compounds were identified in the essentia l oils of H. perforatum with germacrene D (13.7%), α -pinene (5.1%), (E)-caryophyllene (4.7%), n-dodecan ol (4.5%), caryophyllene oxide (4.2%), bicyclogermacrene (3.8%), and spathulenol ( 3.4%) as the main constituents. Twenty-six components were identified in the oil of H. scabrum L. with α -pinene (44.8%), spathulenol (7.1%), verbenone (6.0%), trans-verbenol (3.9%), an d γ -muurolene (3.5%) as the most abundant components. A cluster analysis based on the major components of H. perforatum reveals a large degree of variability in composition of samples fro m different geographical locations.