(+)-ネオメントールを主要成分とするMentha gentilis L. の精油について

抄録

The constituents in the essential oil of Mentha gentilis (L.), “Yahatamint” (one of the wild species) known to distribute in Tokai area were investigated.
The oil collected in August contained (+)-pulegone and (-)-menthone as the major components. The oil collected in November showed a decrease of pulegone (42.3→0.3%) compared with the former, whereas(+)-neomenthol(6.2→31.4%) and (+)-neomenthyl acetate (1.5→11.2%) increased. On the other hand, (-)-camphor (1.1%) was newly found from the oil in June, and (-)-borneol (2.5%) and (-)-bornyl acetate (2.8%) were also detected from the oil in November.
On the basis of seasonal variation of these components, the chemotaxonomical characteristics of this strain were described.