Composição química e atividade antimicrobiana dos óleos essenciais das folhas e flores de Callistemon viminalis (sol. ex Gaertn.) G. Don ex. Loudon (Myrtaceae)
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Data
2013
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Resumo
The aim of this study was to determine the chemical
composition and the antimicrobial activity of essential
oils of Callistemon viminalis leaves (fresh and dried)
and flowers. The essential oils were analyzed by GC/
MS and the minimum inhibitory concentration (MIC)
against Gram-positive and Gram-negative bacteria was
determined by the broth microdilution method. Between
96.72% and 98.70% of the compounds identified in the
essential oils were monoterpenes. 1,8-Cineole was the
major component in the essential oils of fresh leaves
(70.43%), dried leaves (71.71%) and flowers (42.39%),
followed by tricyclene: 12.97% in the fresh leaves, 8.20%
in the dried leaves and 28.08% in the flowers. The MIC
for all microorganisms tested was ≥ 2,000 μg/mL, for all
the essential oil samples. This study is the first report on
the chemical composition and antimicrobial activity of
essential oil from the flowers of C. viminalis.
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Palavras-chave
Callistemon viminalis, Myrtaceae, Óleo essencial, 1,8-cineol, Tricicleno, Atividade antimicrobiana, Callistemon viminalis, Myrtaceae, Essential oil, 1,8-cineole, Tricyclene, Antimicrobial activity
Citação
PIRES, Cyndi Heleinne et al. Composição química e atividade antimicrobiana dos óleos essenciais das folhas e flores de Callistemon viminalis (Sol. ex gertn.) G.Don ex Loudon (Myrtaceae). Revista de Ciências Farmacêuticas Básica e Aplicada, Araraquara, v. 34, n. 4, p. 597-601, 2013.