Abstract
AbstractThe chemical composition of the leaf oil of Leptospermum javanicum Blume was examined by co‐chromatography with authentic samples on two columns of different polarity, GC‐MS and Kováts retention indices. Oils obtained from three different sites at different periods were found to possess compositional similarities but quantitative differences in the concentration of each component. α‐Pinene at 41.7%, β‐pinene at 12.4% and β‐caryophyllene at 11.2% were the major components in one of the samples. The other two samples were characterized by the presence of relatively high concentrations of terpinen‐4‐ol (24.9% and 13.5% respectively) and low amounts of pinenes (6.1% and 8.1% respectively). All the samples contained 4‐hydroxy‐4‐methylpentan‐2‐one which has not been reported previously from the genus Leptospermum.
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