title: Chemical composition and antibacterial activity of essential oils from Myrcia alagoensis (Myrtaceae).
abstract: The chemical composition and antibacterial activity of essential oils obtained from fresh and dried leaves of Myrcia alagoensis O. Berg, collected in a secondary forest remnant in north-eastern Brazil, was compared. The essential oils were obtained by hydrodistillation from fresh and dried leaves, and analysed by GC/FID and GC/MS. The antimicrobial properties of the oils were investigated against five bacteria by determination of the Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC). The essential oils were rich in cyclic sesquiterpenes, such as germacrene B, with antibiotic action against Gram-positive and Gram-negative bacteria. The drying process after collection interfered with the chemical composition and antibacterial activity of the assessed samples.
authors.affiliation: Laboratorio de Química de Produtos Naturais e Bioativos, Universidade Estadual de Feira de Santana, 44036-900 Feira de Santana, Bahia, Brazil.
authors.forename: Aline do N
authors.initials: Ado N
authors.lastname: Silva
authors.forename: Ana Paula T
authors.initials: AP
authors.lastname: Uetanabaro
authors.forename: Angélica M
authors.initials: AM
authors.lastname: Lucchese
mesh_terms: D000900:Anti-Bacterial Agents / Q000494:pharmacology*; D008826:Microbial Sensitivity Tests; D027822:Myrtaceae / Q000737:chemistry*; D009822:Oils, Volatile / Q000032:analysis / Q000494:pharmacology*
chemical_list: D000900:Anti-Bacterial Agents; D009822:Oils, Volatile