The essential oils were obtained from roots of Igagayatsuri (Cyperus polystachyos Rottb.), Azegayatsuri (Cyperus globosus Allioni) and Tamagayatsuri (Cyperus difformis L.) by steam distillation in 0.005---0.023% yields. The components were separated by means of column chromatography and preparative gas chromatography.
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