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      Caracterização química e efeito inibitório de óleos essenciais sobre o crescimento de Staphylococcus aureus e Escherichia coli Translated title: Chemical ckaracterization and inhibitory effect of essential oils on the growth of Staphylococcus aureus and Escherichia coli

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          Abstract

          Objetivou-se avaliar o efeito inibitório dos óleos essenciais de Cymbopogon citratus (capim-limão), Origanum vulgare (orégano) e Syzygium aromaticum (cravo-da-índia); os experimentos foram realizados com as bactérias Staphylococcus aureus e Escherichia coli, importantes patógenos causadores de contaminações em queijos e outros alimentos. Para quantificação e identificação dos constituintes químicos dos óleos, utilizou-se um cromatógrafo gasoso acoplado a um espectrômetro de massa. Os resultados dos testes in vitro, os óleos essenciais de C. citratus, O. vulgare e S. aromaticum promoveram efeito inibitório sobre as bactérias S. aureus e E. coli, porém o S. aromaticum apresentou melhor formação de halo de inibição nas menores concentrações. Para o efeito sinergístico dos óleos sobre as bactérias não foram observadas diferenças quando comparados com o efeito individual dos mesmos. Foi possível verificar que os óleos possuem efeito inibitório sobre os microrganismos estudados, sendo, portanto uma alternativa no controle microbiológico de alimentos.

          Translated abstract

          With the aim of evaluating the inhinibitory effect of the Cymbopogon citratus (lemon grass), Origanun vulgare (oregano) and Syzygium aromaticum (clove), experiments were performed in laboratories, with the Staphylococcus aureus, Escherichia coli bacteria, important pathogenics which contaminate cheese and other foods. For the oil chemical constitutions quantification and identification, the gas chromatography attached mass spectrometry to a was used. In the results in vitro test, the C. citratus, O. vulgare and S. aromaticum essential oils presented antimicrobian activity over S. aureus and E. coli bacteria, however, S. aromaticum presented better formation of inhibition halo in smaller concentrations. For the oil synergetic effect over bacteria and fungi, no significant difference was noticed when compared to their own individual effect. It was possible to verify that the oils had inhibitory effect over the microorganisms studied, being, therefore an alternate option in food microbiological control.

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          Identification of essential oil components by gás chromatography mass spectroscopy

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            Identification of Essential Oil Components by Gas Chromatography/ Matter Spectroscopy

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              Some physical and nutritional properties of Juniperus drupacea fruits

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                cagro
                Ciência e Agrotecnologia
                Ciênc. agrotec.
                Editora da Universidade Federal de Lavras (Lavras )
                1981-1829
                June 2008
                : 32
                : 3
                : 887-893
                Affiliations
                [1 ] Universidade Federal de Lavras Brazil
                [2 ] Universidade Federal de Lavras Brazil
                [3 ] UNINCOR
                [4 ] Universidade Federal de Lavras Brazil
                [5 ] Universidade Federal de Lavras Brazil
                Article
                S1413-70542008000300028
                10.1590/S1413-70542008000300028
                3337b2dc-d90c-4d3d-b656-6f18ab796abc

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1413-7054&lng=en
                Categories
                AGRICULTURE, MULTIDISCIPLINARY

                General agriculture
                pathogenics,chemical component,Óleo essencial,patógenos,constituição química,Essential oil

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