title: [Essential oil components in leaves and stems of Piper bisasperatum (Piperaceae)].
abstract: The composition of the essential oils of the leaves and spikes of Piper bisasperatum Trel. (Piperaceae) obtained by hydrodistillation were investigated by GC-MS. The main constituents of the leaves oil were the sesquiterpenes germacrene D (30.7%), beta-caryophyllene (9.5%) and gamma-elemene (5.9%), together with the monoterpene beta-pinene (5.5%). The main constituents of the spikes (flowers and fruits) were the monoterpenes beta-pinene (17.5%), alpha-pinene (14.0%) and the sesquiterpenes germacrene D (19.5%), beta-caryophyllene (7.9%) and ylangene (7.6%). The C6-C1 compounds benzyl benzoate (0.3%) and benzaldehyde (< 0.1%) were identified for the first time in the genus Piper.
authors.affiliation: Centro de Investigaciones en Productos Naturales (CIPRONA), Universidad de Costa Rica, San José, Costa Rica.
authors.forename: J F
authors.initials: JF
authors.lastname: Cicció
mesh_terms: D003364:Costa Rica; D005638:Fruit / Q000737:chemistry*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D009822:Oils, Volatile / Q000032:analysis*; D018515:Plant Leaves / Q000737:chemistry*
chemical_list: D009822:Oils, Volatile