VOLATILE CONSTITUENTS OF JUNIPERUS CHINENSIS L., TAXUS X MEDIA ‘DENSIFORMIS’ AND TSUGA CANADENSIS (L.) CARRIÈRE FROM CANADA.

Abstract

The essential oil composition leaves of Juniperus communis L., Taxus canadensis Marshall. and Tsuga canadensis (L.) Carr. from Canada were investigated by HS-SPME and GC-MS. Thirty-three, thirty and thirty-one components were identified representing 95.78%, 93.89%, 96.14% of the oil, respectively. Limonene (26.12%), benzene (15.62%), -mrycene (9.08%) and -pinene (7.30%) were found to be the main constituents of Juniperus communis; 1-propanone (36.38%), morpholine (10.95%), methylamine (9.10%) and methanone (8.14%) were detected main components of Taxus canadensis; bornylacetate (26.84%), -pinene (23.74%), camphene (11.93%) and limonene (6.02%) were determined as major constituents of Tsuga canadensis. The chemical distributions of the essential oil compounds in the genus pattern were discussed in means of chemotaxonomy and natural products.