Chemical Composition of the Essential Oils From Twigs, Leaves, and Cones of Thuja plicata and Its Cultivar Varieties “Fastigiata”, “Kornik,” and “Zebrina”

Abstract

The essential oils from different parts of Thuja plicata and its cultivar varieties “Fastigiata”, “Kornik,” and “Zebrina” were analyzed by gas chromatography (GC) and GC/mass spectrometry. More than 80 compounds were identified. The oils from leaves, twigs with leaves, and twigs without leaves contained mainly α-thujone (52.1%-59.2%), fenchone (10.0%-11.3%), and beyerene (3.7%-9.5%), whereas in the cone oil there were α-thujone (35.6%), sabinene (24.0%), and α-pinene (8.3%). The main constituents of the oils from twigs with leaves of “Fastigiata,” “Zebrina,” and “Kornik” cultivars were α-thujone (76.2%, 72.5%, and 67.4%, respectively) and β-thujone (7.6%, 6.2%, and 4.9%, respectively). The oils from cultivars contained more thujones and less fenchone and diterpenes in comparison with T. plicata oil.