The leaf oil of of Desmos cochinchinensis var. fulvescens Ban collected from Ha Tinh province, Vietnam, in October 2006 was isolated by steam distillation to give oil yield 0.15% and analyzed by Capillary GC and GC/MS. Fifty three components have been identified accounting more than 89.7% of the oil respectively. The major constituents of this oil appeared to be β-elemen (16.1%), d-cadinen (13.8%) and β-caryophyllen (13.7%).
Less predominant constituents germaren B (7.7%), germacren A (5.7%), epizonaren (3.9%), elemol (3.6%), α-humulen (2.7%), α-pinen (2.3%), β-selinen (2.3%), g-terpinen (1.8%), d-elemen (1.7%), β-cubenen (1.5%), eudesma-4 (15), 11-dien-9-on (1.3%), α-selinen (1.3%), and g-elemen (1.1%).
Do Ngoc Dai, Tran Dinh Thang
Nguyen Xuan Dung
College of Science, HNU
(J. Biology, No 3/2009)