title: Essential Oils from Different Plant Parts of Eucalyptus cinerea F. Muell. ex Benth. (Myrtaceae) as a Source of 1,8-Cineole and Their Bioactivities.
abstract: Eucalyptus cinerea, known as silver dollar tree, has few descriptions in traditional medicine. Chemical composition and antimicrobial properties of the essential oils of leaves, flowers and fruits, collected seasonally, were determined by GC/MS and disk diffusion/MIC, respectively. 1,8-Cineole was the main compound, particularly in fresh leaves-Spring (74.98%), dried leaves-Spring (85.32%), flowers-Winter (78.76%) and fruits-Winter (80.97%). Other compounds were found in the aerial parts in all seasons: α-pinene (2.41% to 10.13%), limonene (1.46% to 4.43%), α-terpineol (1.73% to 11.72%), and α-terpinyl acetate (3.04% to 20.44%). The essential oils showed antimicrobial activities against bacteria and yeasts, with the best results being found for the dried autumn and winter leaves oils (MIC < 0.39 mg/mL) against Streptococcus pyogenes. For the other tested microorganisms the following MIC results were found: Staphylococcus aureus-Dried leaves oil from summer (0.78 mg/mL), Pseudomonas aeruginosa-Flowers oil from autumn and fruits oil from winter (1.56 mg/mL) and Candida albicans-Flowers oil from autumn and fruits oils from winter and spring (0.78 mg/mL).
authors.affiliation: Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Paraná, Campus Jardim Botânico, CEP 80210-170, Curitiba, Paraná, Brazil. sayonara.mendes@gmail.com.
authors.forename: Sayonara Mendes
authors.initials: SM
authors.lastname: Silva
authors.affiliation: Graduação em Farmácia, Universidade Federal do Paraná, Campus Jardim Botânico, CEP 80210-170, Curitiba, Paraná, Brazil. simone_abe@yahoo.com.br.
authors.forename: Simone Yae
authors.initials: SY
authors.lastname: Abe
authors.affiliation: Departamento de Farmácia, Universidade Federal do Paraná, Campus Jardim Botânico, CEP 80210-170, Curitiba, Paraná, Brazil. fsmurakami@ufpr.br.
authors.forename: Fábio Seigi
authors.initials: FS
authors.lastname: Murakami
authors.affiliation: Programa de Pós-Graduação em Química, Universidade Federal do Paraná, Centro Politécnico, CEP 81531-990, Curitiba, Paraná, Brazil. gufrensch@gmail.com.
authors.forename: Gustavo
authors.initials: G
authors.lastname: Frensch
authors.affiliation: Programa de Pós-Graduação em Química, Universidade Federal do Paraná, Centro Politécnico, CEP 81531-990, Curitiba, Paraná, Brazil. tic@ufpr.br.
authors.forename: Francisco A
authors.initials: FA
authors.lastname: Marques
authors.affiliation: Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Paraná, Campus Jardim Botânico, CEP 80210-170, Curitiba, Paraná, Brazil. tomoenakashima@ufpr.br.
authors.forename: Tomoe
authors.initials: T
authors.lastname: Nakashima
keywords: 1,8-cineole; Eucalyptus cinerea; antimicrobial properties; essential oil; seasonal variation