Chemical composition, antioxidant and antibacterial activities of essential oils from leaves and flowers of Eugenia klotzschiana Berg (Myrtaceae)
An. acad. bras. ciênc
; 89(3): 1907-1915, July-Sept. 2017. tab
Article
em En
| LILACS
| ID: biblio-886748
Biblioteca responsável:
BR1.1
ABSTRACT
ABSTRACT Many essential oils (EOs) of different plant species possess interesting antimicrobial effects on buccal bacteria and antioxidant properties. Eugenia klotzschiana Berg (pêra-do-cerrado, in Portuguese) is a species of Myrtaceae with restricted distribution in the Cerrado. The essential oils were extracted through the hydrodistillation technique using a modified Clevenger apparatus (2 hours) and chemically characterized by GC-MS. The major compounds were α-copaene (10.6 %) found in oil from leaves in natura, β-bisabolene (17.4 %) in the essential oil from dry leaves and α-(E)-bergamotene (29.9 %) in oil from flowers. The antioxidant activity of essential oils showed similarities in both methods under analysis (DPPH and ABTS˙+) and the results suggested moderate to high antioxidant activity. The antibacterial activity was evaluated by determining minimum inhibitory concentrations (MICs), using the microdilution method. MIC values below 400 µg/mL were obtained against Streptococcus salivarius (200 µg/mL), S. mutans (50 µg/mL), S. mitis (200 µg/mL) and Prevotella nigrescens (50 µg/mL). This is the first report of the chemical composition and antibacterial and antioxidant activities of the essential oils of E. klotzschiana. These results suggest that E. klotzschiana, a Brazilian plant, provide initial evidence of a new and alternative source of substances with medicinal interest.
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Texto completo:
1
Base de dados:
LILACS
Métodos Terapêuticos e Terapias MTCI:
Terapias_energeticas
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Terapia_floral
Assunto principal:
Streptococcus
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Prevotella
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Folhas de Planta
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Flores
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Eugenia
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Antibacterianos
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Antioxidantes
Idioma:
En
Revista:
An Acad Bras Cienc
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An. acad. bras. ciênc
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An. acad. bras. ciênc. (Online)
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Anais da academia brasileira de ciências (Impresso)
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Brasil