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v. 2 n. 2 (2021): Edição Especial: Anais de Eventos
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Anais do I Congresso Nacional de Microbiologia Clínica On-Line
ATIVIDADE ANTIMICROBIANA DE EXTRATO HIDROALCOÓLICO DE CASCA DE NOZ PECÃ EM CEPAS DE STAPHYLOCOCCUS AUREUS ISOLADAS DE MASTITE BOVINA
Autores
Carla Munique Aparecida Garda
Vitoria Karolini Betim Fieldkircher Caus
Naiara Vitoria Ferreira Cortes Koprovski
Eduarda Carolina Scherer Hagemann
Dalila Moter Benvegnú
Palavras-chave:
ANTIMICROBIANOS NATURAIS, CARYA ILLINOINENSIS, GRAM POSITIVAS, MASTITE, RESISTÊNCIA MICROBIANA
Resumo
Introdução: A mastite bovina, caracterizada pela inflamação da glândula mamária é um dos principais problemas que afeta a bovinocultura leiteira, cujo tratamento costuma ser realizado através da utilização de antibióticos, os quais podem acarretar riscos à saúde pública, considerando que nenhuma tecnologia é capaz de eliminar os resíduos presentes nos alimentos. O agente Staphylococcus aureus, um dos principais causadores dessa afecção, apresenta resistência significativa aos antibióticos convencionais. Assim, faz-se necessárias novas abordagens terapêuticas, nesse sentido, a fitoterapia tem se destacado. Entre as diversas espécies que têm sido estudadas, encontra-se a noz pecã. Estudos que buscam avaliar o efeito antimicrobiano da noz pecã têm instigado a comunidade científica na busca por resultados promissores. Objetivo: avaliar o potencial antibacteriano do extrato hidroalcoólico da casca de noz pecã sobre 25 cepas de S. aureus isoladas de casos de mastite bovina. Material e métodos: o extrato hidroalcoólico (1:1) foi obtido em uma concentração de 20%, utilizando um extrator Soxhlet. Para a avaliação antimicrobiana dos extratos, a técnica empregada foi a Concentração Inibitória Mínima (CIM), determinada pela técnica de microdiluição seriada, em microplacas (96 orifícios), sendo que no poço inicial, o conteúdo era de: 34,5 μl de extrato + 195 μl de caldo + 10 μl de inóculo. Os testes foram realizados em triplicatas e uma linha da microplaca foi destinada aos controles. A CIM foi avaliada pela leitura de absorbância em 605 nm no equipamento Elisa Multiskan FC (Thermo Scientific) e realizada a confirmação com revelador Resazurina. A determinação da concentração bactericida mínima (CBM) foi realizada em placas com meio ágar Mueller-Hinton. Resultados: Verificou-se que o extrato apresentou resultados de CIM e CBM correspondentes para todas as cepas, sendo que em 96% (n=24) na concentração de 15% de extrato, e em 4% das cepas (n=1) na concentração de 7.5% de extrato. Conclusão: Os resultados indicaram que o extrato hidroalcoólico exerceu efeito antimicrobiano sobre as cepas testadas. Assim, tendo em vista o efeito promissor da casca de noz pecã, espera-se que os achados possam instigar o desenvolvimento de novos estudos acerca do mecanismo de ação dessa substância no tratamento da mastite bovina.
Como Citar
Garda, C. M. A. ., Caus, V. K. B. F., Koprovski, N. V. F. C. ., Hagemann, E. C. S., & Benvegnú, D. M. (2021). ATIVIDADE ANTIMICROBIANA DE EXTRATO HIDROALCOÓLICO DE CASCA DE NOZ PECÃ EM CEPAS DE STAPHYLOCOCCUS AUREUS ISOLADAS DE MASTITE BOVINA. Revista Multidisciplinar Em Saúde , 2 (2), 39. https://doi.org/10.51161/rems/1196
Seção
Anais do I Congresso Nacional de Microbiologia Clínica On-Line
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