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Constituents of the essential oil of Leptospermum javanicum Blume from Peninsular Malaysia
Author(s) -
Bin Jantan Ibrahim,
Ali Nor Azah Mohd,
Said Ahmad Abu,
Rashih Ahmad Abdul
Publication year - 1995
Publication title -
flavour and fragrance journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 70
eISSN - 1099-1026
pISSN - 0882-5734
DOI - 10.1002/ffj.2730100406
Subject(s) - chemistry , essential oil , chemical composition , composition (language) , kovats retention index , chromatography , botany , food science , gas chromatography , organic chemistry , philosophy , linguistics , biology
The 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 .