[Miscellaneous contributions to the essential oils of plants from various territories. LI. On the components of essential oils of Torilis japonica (Houtt.) DC].

The essential oils of Torilis japonica (Houtt.) DC. (Japanese name, Yabujirami) of the family Umbelliferae were prepared from fresh whole herbs and fruits, and investigated by using gas chromatographic and mass spectrometric analyses. The fruits of this plant had been used as a substitute in Japan for a Chinese crude drug Zya-syo-si: Cnidii Monnieri Fructus. Fifty three components were positively identified in the essential oils. The main components of the essential oil were germacrene-D (57.9-71.8% in the oil), alpha-humulene (2.4-13.2%), bicyclogermacrene (1.9-5.4%), beta-caryophyllene (1.5-4.6%), and delta-cadinene (1.0-1.9%).