摘要：Os óleos essenciais obtidos das folhas e galhos finos de Piper amapense, Piper duckei e Piper bartlingianum foram analisados por GC/MS. Os óleos dessas espécies são constituídos na sua totalidade por sesquiterpenos. Os principais constituintes identificados no óleo de P. amapense foram trans-cariofileno (25,0%), óxido de cariofileno (17,0%) e β-selineno (15,0%). O óleo de P. duckei foi dominado por trans-cariofileno (23,5%), óxido de cariofileno (18,4%), β-eudesmol (9,4%) e ą-eudesmol (9,1%). Os mais importantes componentes encontrados em P. bartlingianum foram ą-cadinol (11,2%), β-elemene (10,5%), ą-muurolol (9,4%), (E)-nerolidol (9,0%).
其他摘要：The essential oils from leaves and thin branches of Piper amapense, Piper ducket and Piper bartlingianum were analysed by GC/MS and all volatile compounds were identified as sesquiterpenes. The main constitutents identified in the oil of P. amapense were trans-caryophyllene (25.0%), caryophyllene oxide (17.0%) and β-selinene (15.0%). The oil of P. duckei was dominated by trans-caryophyllene (23.5%), caryophyllene oxide (18.4%), β-eudesmol (9.4%) and a-eudesmol (9.1%). The major components found in the oil of P. bartlingianum were
