title: Essential oils from the leaves of six medicinal plants of Nigeria.
abstract: The chemistry of Cassia siamea L., C. occidentalis L. (Fabaceae), Cnestis ferruginea Vahl ex DC (Connaraceae), Anthocleista djalonensis A. Chev (Loganiaceae), Solanum torvum Swartz and S. erianthum G. Don (Solanaceae) volatiles grown in Nigeria have been studied. The essential oils were obtained by hydrodistillation and analyzed by GC and GC-MS. The main compounds of C. siamea were (E)-geranyl acetone (5.8%), 1-octen-3-ol (5.8%), linalool (7.8%), iso-italicene (15.4%) and (E)-beta-damascenone (11.0%). On the other hand, C. occidentalis consisted mainly of (E)-geranyl acetone (8.0%), hexahydrofarnesylacetone (24.0%) and (E)-phytol acetate (40.7%). The oil of C. ferruginea was comprised mainly of (E)-geranyl acetone (13.7%), (E)-alpha-ionone (9.5%), phytol (5.8%), pentadecanal (6.1%) and 1-octen-3-ol (5.5%). The main compounds of A. djalonensis were alpha-humulene (31.9%), beta-caryophyllene (17.8%), humulene epoxide II (12.7%) and caryophyllene oxide (5.9%). The main volatiles of S. torvum were (E)-phytol acetate (38.7%), pentadecanal (25.3%) and (E)-geranyl acetone (5.0%). Apart from methyl salicylate (4.5%), tetradecanal (2.2%), 2-pentyl furan (1.8%), hexahydrofarnesylacetone (1.6%) and hexadecanal (1.1%), all other compounds were either present in trace quantity or in amounts less than 1%. On the other hand, alpha-humulene (46.6%) and beta-caryophyllene (20.6%) were the compounds occurring in higher quantities in S. erianthum. The volatile oil contents of Cassia siamea, Cnestis ferruginea, Anthocleista djalonensis and Solanum torvum are being reported for the first time.
authors.affiliation: Natural Products Research Unit, Department of Chemistry, Faculty of Science, Lagos State University, Badagry Expressway Ojo, P. M B. 0001, Lasu Post Office, Ojo, Lagos, Nigeria. isiaka.ogunwande@lasu.edu.ng
authors.forename: Isiaka A
authors.initials: IA
authors.lastname: Ogunwande
authors.forename: Nudewhenu O
authors.initials: NO
authors.lastname: Avoseh
authors.forename: Guido
authors.initials: G
authors.lastname: Flamini
authors.forename: Alimot-Sadiat O
authors.initials: AS
authors.lastname: Hassan
authors.forename: AbdulRazaq O
authors.initials: AO
authors.lastname: Ogunmoye
authors.forename: Akindele O
authors.initials: AO
authors.lastname: Ogunsanwo
authors.forename: Kamorudeen O
authors.initials: KO
authors.lastname: Yusuf
authors.forename: Atuonwu O
authors.initials: AO
authors.lastname: Kelechi
authors.forename: Zainab A
authors.initials: ZA
authors.lastname: Tiamiyu
authors.forename: Godgift O
authors.initials: GO
authors.lastname: Tabowei
mesh_terms: D007887:Fabaceae / Q000737:chemistry; D009549:Nigeria; D009822:Oils, Volatile / Q000032:analysis*; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D019657:Solanaceae / Q000737:chemistry
chemical_list: D009822:Oils, Volatile