title: Chemical composition of the essential oils of Cyperus rotundus L. from South Africa.
abstract: The essential oils from the rhizomes of Cyperus rotundus L. collected from two different locations (Empangeni-A and KwaDlangezwa-B; both in the Kwa-Zulu Natal Province of South Africa) were obtained by hydrodistillation and analyzed by capillary GC and GC/MS. Forty-one and 43 components were identified, representing 89.9% and 92.0% of sample A and sample B, respectively. Alpha-cyperone (11.0%), myrtenol (7.9%), caryophyllene oxide (5.4%) and beta-pinene (5.3%) were major compounds in the oil of sample A. The main constituents of the oil of sample B were beta-pinene (11.3%), alpha-pinene (10.8%), alpha-cyperone (7.9%), myrtenol (7.1%) and alpha-selinene (6.6%).
authors.affiliation: Department of Chemistry, University of Zululand, KwaDlangezwa 3886, South Africa.
authors.forename: Oladipupo A
authors.initials: OA
authors.lastname: Lawal
authors.forename: Adebola O
authors.initials: AO
authors.lastname: Oyedeji
mesh_terms: D000081008:Bicyclic Monoterpenes; D001643:Bridged Bicyclo Compounds / Q000737:chemistry; D002849:Chromatography, Gas; D029786:Cyperus / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry; D007659:Ketones / Q000737:chemistry; D039821:Monoterpenes / Q000737:chemistry; D009822:Oils, Volatile / Q000737:chemistry*; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes / Q000737:chemistry; D013019:South Africa
chemical_list: D000081008:Bicyclic Monoterpenes; D001643:Bridged Bicyclo Compounds; D007659:Ketones; D039821:Monoterpenes; D009822:Oils, Volatile; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes; C539285:selinene; C010789:beta-pinene; C515179:caryophyllene oxide
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