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Essential Oils of the Leaves of the Raukaua Genus (Araliaceae) Roderick J. Weston

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Essential Oils of the Leaves of the Raukaua Genus (Araliaceae)

Roderick J. Weston

Industrial Research Ltd., P.O. Box 31-310, Lower Hutt, New Zealand. Fax: +64-4-93 13-055.

E-mail: r.weston@irl.cri.nz

Z. Naturforsch.59 c, 35Ð38 (2004); received June 18, 2003

TheRaukauagenus of the family Araliaceae consists of 3 species,R. anomalus, R. edgerleyi andR. simplex, all endemic to New Zealand. The essential oil ofR. edgerleyiandR. simplex consisted largely of monoterpenes. Limonene was the most abundant (23%) inR. edgerleyi and myrcene the most abundant (34%) in R. simplex. The oil of R. simplex lacked any significant sesquiterpenoids whereas bicyclogermacrene constituted 12% of the oil ofR. edg- erleyi.The oil ofR. anomaluscontained monoterpenes in low abundance and the sesquiter- penoids germacrene-B (15%) andγ-muurolene (16%) dominated the composition of this oil.

The oil ofR. edgerleyihad a pleasant fresh green aroma but the low yields of all three oils excluded them from potential commercial use.

Key words: Raukaua anomalus,edgerleyiandsimplex, Araliaceae, Essential Oil

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