Chemical composition of Hyptis pectinata L., H. Lanceolata Poit, H. Suaveolens (L) Poit and H. Spicigera Lam. essential oils from Togo

Essential oils of Hyptis pectinata L. (leaves and flowers), H. lanceolata Poit(leaves), H. suaveolens (L) Poit (leaves and flowers) and H. spicigera Lan. (leaves) harvested in Togo were obtained by hydrodistillation and analysed by GC and GC-M S. The main constituents of the essential oils were respectively caryophylene oxide (32.7%), humulene epoxide (9.3%) for Hyptis pectinata and germacrene D (27.8%), beta-caryophyllene (12.6%) and beta-elemene (9.5%) for H. lanceolata oil sample. In the H. spicigera essential oil sample beta-caryophyllene (33.8%), alpha-bergamotene (11.3%) and alpha-caryophyllene (7.4%) were found as the major constituents. In the H. suaveolens essential oil, sabinene (28.0%) and P-caryophyllene (25.8%) were mentioned as major constituents of the essential oil.