The essential oils from the aerial parts of leaves and flowers of Poiretia latifolia and Poiretia tetraphylla, were analysed by GC, GC/MS and Enantioselective Gas Chromatography (EGC). Forty five constituents were identified from the essential oils.
The major constituents of the essential oils of P. latifolia, dominated by monoterpenos, were carvone (50-69%), limonene (13-24%) and trans-dihidrocarvone (8-
18%). The essential oil from leaves of P. tetraphylla was dominated by sesquiterpenes, where nerolidol-E (17-30%), β-cariofilene (5-16%) and germacrene-D (3-9%) were the
major constituents. The essential oils from P. latifolia shows activity against brine shrimp assay (LC50 = 67 - 85 μg mL-1), and exhibited antimicrobial activity against some gram-positive and gram-negative bacteria, and some yeasts, while the essential oil from leaves of P. tetraphylla was inactive. / Os óleos essenciais das partes aéreas de folhas e flores de Poiretia latifolia e Poiretia tetraphylla foram analisados por CG, CG/EM e Cromatografia Gasosa Enantiosseletiva (CGE), sendo que foram identificados quarenta e cinco componentes
destes óleos voláteis. Os componentes principais dos óleos voláteis de P. latifolia, ricos em monoterpenos, foram a carvona (50-69%), o limoneno (13-24%) e a trans-dihidrocarvona (8-18%). O óleo volátil das folhas de P. tetraphylla teve uma composição dominada por sesquiterpenos, onde o nerolidol-E (17-30%), o β-cariofileno (5-16%) e o germacreno-D (3-9%) foram os componentes principais. Os óleos voláteis de P. latifolia mostraram uma atividade frente a Artemia salina bastante significativa (LC50 = 67 - 85 μg mL-1), exibindo também atividade antimicrobiana
contra algumas bactérias gram-positivas e gram-negativas, e alguns fungos, enquanto o óleo volátil de folhas de P. tetraphylla foi inativos para estes ensaios.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufsm.br:1/10630 |
| Date | 21 January 2005 |
| Creators | Silva, Carla Porto da |
| Contributors | Morel, Ademir Farias, Ethur, Eduardo Miranda, Silva, Ubiratan Flores da |
| Publisher | Universidade Federal de Santa Maria, Programa de Pós-Graduação em Química, UFSM, BR, Química |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFSM, instname:Universidade Federal de Santa Maria, instacron:UFSM |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 100600000000, 400, 500, 300, 500, 500, 8c99befa-f1b3-4afb-98b8-7fab46c3d493, eb632b45-562e-4666-9f44-306ce302ab53, 24d41235-f70a-494c-97c1-3b290ba2f68c, a0abbcc7-a5fe-4607-b353-f20834799208 |
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