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Navegando IQ - Artigos publicados em periódicos por Assunto "1,8-cineol"
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Item Composição química e atividade antimicrobiana dos óleos essenciais das folhas e flores de Callistemon viminalis (sol. ex Gaertn.) G. Don ex. Loudon (Myrtaceae)(2013) Pires, Cyndi Heleinne; Paula, Joelma Abadia Marciano de; Tresvenzol, Leonice Manrique Faustino; Ferri, Pedro Henrique; Fiuza, Tatiana de Sousa; Bara, Maria Teresa FreitasThe 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.