(+)-メントフランを主要成分とする野生ハッカの精油

概要

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The authors attempted to investigate the essential oil of the wild mints grown in Tokai area which contains (+)-menthofuran as a major constituent. The following two chemical strains were found; one of the wild mints, “Akasaka Hakka I, chro-mosomes 2n=96” was shown to contain (+)-pule-gone, (+)-menthofuran, (-)-menthone, (-)-men-thol and (-)-menthyl acetate, while the other “Akasaka Hakka II, 2n=96” contained (+)-pule-gone, (+)-menthofuran, (-)-menthone, (+)-neo-menthol and (+)-neomenthyl acetate as the major components of each oil collected in August. The oil of I collected in October showed the decrease of pulegone (22.3→0.3%) and menthone (12.7→2.6%) compared with the oil in August, whearas menthofuran (19.2→23.0%), menthol (22.5→31.0%) and menthyl acetate(7.4→28.5%) increased. In addition, the oil of the flowering heads of I con-sisted of pulegone (40.6%) and menthofuran (28.6%). On the basis of these results, the biosynthetic pathways of the major contents in both chemical strains were described.
社団法人日本農芸化学会の論文