The influence of the isolation method on the composition of the essential oil of leaves and twigs of Juniperus communis L. var. saxatilis Pall. growing in Norway

Studies on the essential oil of leaves and terminal twigs of Juniperus communis L. var. saxatilis Pall., isolated by steam and hydro distillation using Clevenger type apparatuses showed marked differences in the composition depending on whether the plant material was either comminuted or not prior to the distillation, as well as depending upon the duration of the distillation connected herewith.