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

DOI:

https://doi.org/10.51161/rems/1196

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.

Publicado

2021-06-12

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

Edição

Seção

Anais do I Congresso Nacional de Microbiologia Clínica On-Line
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Dispatcher.dispatch(Object:Request) % line  281, file: PKPApplication.inc.php
PKPApplication.execute() % line   68, file: index.php
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                                                               DAO.retrieveCached(SELECT 				o.submission_id, 				MAX(s.context_id) AS journal_id, 				MAX(i.date_published) AS i_pub, 				MAX(p.date_published) A..., Array[2], 3600) % line   91, file: ArticleSearchDAO.inc.php
                                                            ArticleSearchDAO.getPhraseResults(Object:Journal, Array[1], null, null, , 500, 1) % line  201, file: SubmissionSearch.inc.php
                                                         SubmissionSearch._getMergedPhraseResults(Object:Journal, Array[1], , null, null, 500, 1) % line  146, file: SubmissionSearch.inc.php
                                                      SubmissionSearch._getMergedKeywordResults(Object:Journal, Array[4], , null, null, 500, 1) % line  194, file: SubmissionSearch.inc.php
                                                   SubmissionSearch._getMergedPhraseResults(Object:Journal, Array[4], null, null, null, 500, 1) % line  146, file: SubmissionSearch.inc.php
                                                SubmissionSearch._getMergedKeywordResults(Object:Journal, Array[3], null, null, null, 500, 1) % line  132, file: SubmissionSearch.inc.php
                                             SubmissionSearch._getMergedArray(Object:Journal, Array[1], null, null) % line  263, file: SubmissionSearch.inc.php
                                          SubmissionSearch.retrieveResults(Object:Request, Object:Journal, Array[1], null, null, null, Object:DBResultRange, Array[1]) % line   92, file: RecommendBySimilarityPlugin.inc.php
                                       RecommendBySimilarityPlugin.callbackTemplateArticlePageFooter(Templates::Article::Footer::PageFooter, Array[3]) % line  107, file: HookRegistry.inc.php
                                    HookRegistry.call(Templates::Article::Footer::PageFooter, Array[3]) % line 1267, file: PKPTemplateManager.inc.php
                                 PKPTemplateManager.smartyCallHook(Array[1], Object:Smarty_Internal_Template) % line   43, file: 42362804174f266c598cdb32c3208fc745b92101^1c372c95cd85572e0fbc9a53d0323a0b229cfc78_0.app.frontendpagesarticle.tpl.php
                              content_6781613650b432_13896783(Object:Smarty_Internal_Template) % line  123, file: smarty_template_resource_base.php
                           Smarty_Template_Resource_Base.getRenderedTemplateCode(Object:Smarty_Internal_Template) % line  114, file: smarty_template_compiled.php
                        Smarty_Template_Compiled.render(Object:Smarty_Internal_Template) % line  216, file: smarty_internal_template.php
                     Smarty_Internal_Template.render(false, 1) % line  232, file: smarty_internal_templatebase.php
                  Smarty_Internal_TemplateBase._execute(Object:Smarty_Internal_Template, null, 42362804174f266c598cdb32c3208fc745b92101, null, 1) % line  134, file: smarty_internal_templatebase.php
               Smarty_Internal_TemplateBase.display(frontend/pages/article.tpl, null, 42362804174f266c598cdb32c3208fc745b92101, null) % line  924, file: PKPTemplateManager.inc.php
            PKPTemplateManager.display(frontend/pages/article.tpl) % line  292, file: ArticleHandler.inc.php
         ArticleHandler.view(Array[1], Object:Request) % line  391, file: PKPRouter.inc.php
      PKPRouter._authorizeInitializeAndCallRequest(Array[2], Object:Request, Array[1], false) % line  231, file: PKPPageRouter.inc.php
   PKPPageRouter.route(Object:Request) % line  143, file: Dispatcher.inc.php
Dispatcher.dispatch(Object:Request) % line  281, file: PKPApplication.inc.php
PKPApplication.execute() % line   68, file: index.php

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