title: Biological activity and chemical composition of the essential oil from Jamaican Hyptis verticillata Jacq.
abstract: The chemical composition of the essential oil obtained by hydrodistillation from the aerial parts of Hyptis verticillata Jacq. was elucidated by a combination of GC and GC-MS analyses. The oil was dominated by the sesquiterpenoids cadina-4,10(15)-dien-3-one (15.1%) (1) and aromadendr-1(10)-en-9-one (squamulosone) (30.7%) (2). The oil exhibited chemosterilant activities against the cattle tick, Boophilus microplus Canest., and toxic action against adult Cylas formicarius elegantulus Summer, the most destructive pest of sweet potato (Ipomoea species).
authors.affiliation: Department of Chemistry, University of the West Indies, Mona, Kingston 7, Jamaica, and Scientific Research Council, Old Hope Road, Kingston 6, Jamaica.
authors.forename: Petrea C
authors.initials: PC
authors.lastname: Facey
authors.forename: Roy B R
authors.initials: RB
authors.lastname: Porter
authors.forename: Paul B
authors.initials: PB
authors.lastname: Reese
authors.forename: Lawrence A D
authors.initials: LA
authors.lastname: Williams
mesh_terms: D000818:Animals; D002849:Chromatography, Gas; D001517:Coleoptera; D008401:Gas Chromatography-Mass Spectrometry; D031331:Hyptis / Q000737:chemistry*; D007306:Insecticides; D026863:Ixodidae; D009822:Oils, Volatile / Q000737:chemistry*
chemical_list: D007306:Insecticides; D009822:Oils, Volatile