The essential oils were obtained in 0.008% (A) and 0.003% (B) yield by steam-distillation from the flowers of
T. excelsa W. (A) and
T. fortunei W. (B), which were collected at Higashiosaka-shi in May, 1978. Each essential oil was separated into three parts; neutral part, sodium bicarbonate soluble part and sodium hydroxide soluble part.
As a result of chromatographic and spectral analysis, the major components of the essential oil were found to be 1-penten-3-ol (A) and eugenol (B), and they contained terpene compounds, aliphatic aldehydes, aliphatic alcohols, aliphatic acetates, aromatic compounds, phenol compounds and aliphatic fatty acids. Some of these constituents were identified as α-pinene, camphene, α-muurolene, octanal, nonanal, hexanol,
cis-3-hexen-1-ol, nonanol, nonyl acetate, β-phenylethyl alcohol, methyl eugenol, cresols, and miscellaneous, as shown in Table II.
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