Composition of Stem Bark Essential Oils of Three Vietnamese Essential Oils of Three Vietnamese Species of Kadsura (Schisandraceae)

The chemical composition of volatiles from the stem barks of three different Kadsura species has been studied. The essential oils were obtained by hydrodistillation and analyzed by GC and GC-MS. The components were identified by MS libraries and their LRIs. The essential oils content varied between 0.15% and 0.20% (v/w), calculated on a dry weight basis. Sesquiterpene hydrocarbons (25.2% - 57.9%) and oxygenated sesquiterpenes (27.1%- 64.4%) are the main oil fractions . Kadsura coccinea(Lemaire) A. C. Smith., afforded oil whose major compounds were b -caryophylene (23.6%), d -cadinene (8.6%), caryophyllene oxide (7.8%) , epi- a -bisabolol (7.5%) and a -copaene (6.6%) . On the other hand, a -muurolol (43.5%) was the most singly abundant constituent of Kadsura longipeduculata Finet & Gagnepain. , with minor amounts of a -cadinol (5.4%), b -caryophylene (5.4%) and d -cadinene (5.0%). However, we have identified a -acorenol (10.1%), d -cadinene (9.6%), g -cadinene (8.1%) and d -elemene (6.8%) as the major constituents of Kadsura induta A. C. Smith.