Chemical Constituents of Essential Oils from the Leaves, Stems, Roots and Fruits of Alpinia polyantha

The essential oils obtained from the leaves, stems, roots and fruits of Alpinia polyantha D. Fang (Zingiberaceae) have been studied. The leaf oil was comprised mainly of camphor (16.1%), alpha-pinene (15.2%) and beta-agarofuran (12.9%), while the major constituents of the stem oil were a-pinene (12.4%), beta-cubebene (10.6%), beta-agarofuran (10.3%) and globulol (8.8%). However, beta-cubebene (12.6%), fenchyl acetate (10.8%), beta-maaliene (9.0%), aristolone (8.8%) and beta-pinene (8.2%) were the compounds occurring in higher amounts in the root oil. The quantitatively significant compounds of the fruit oil were delta-cadinene (10.9%), beta-caryophyllene (9.1%), beta-pinene (8.7%) and alpha-muurolene (7.7%).