Summary

Chemical Composition of Essential Oils from the Rhizome of Some Acorus Species Growingin Thua Thien Hue Province - Vietnam

Some plants of Acorus genus are well-known herbs in Vietnam for their traditional medicinal uses. We reinvestigated the extract from rhizome of some Acorus plants growing in Thua Thien Hue. The chemical composition of the essential oils of their rhizome were analysed by the GC/MS method. There are two species of Acorus in Thua Thien Hue. The major component of essential oils from the rhizome of one species is asaron and of the other is methyl isoeugenol.

Asaron was isolated and purified by crystallization in n-hexan and its structure has been confirmed by ¹H- and ¹³C-NMR. Besides, we also isolated a white crystal. It is a mixture of two components. One of them is recognized as b‑sitosterol by MS, ¹H- and ¹³C-NMR. This constituent is first isolated from the extract of rhizome of Acorus gramineus Soland. in Vietnam.

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