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2023-04-20T11:20:06Z2023-04-20T11:20:06Z2021-12-221017e124101724268https://doi.org/10.33448/rsd-v10i17.242682525-3409http://hdl.handle.net/1843/52302The antimicrobial activity of Caryocar brasiliense and Annona crassiflora leaves extracts was evaluated against Escherichia coli strains through a sensitivity test by the agar diffusion method and by the evaluation of minimal inhibitory concentrations (MIC) and minimal bactericidal concentrations (MBC) by the microdilution technique followed by plating. The sanitizing efficiency of these extracts in reducing E. coli cells biotransferred from L. sativa leaves to polypropylene surfaces was evaluated after an exposure time of 5 minutes. All strains were sensitive to antibacterials and the formation of an inhibition halo was observed for the extracts against all strains tested. The C. brasiliense extract showed better antimicrobial action against E. coli strains, with a MIC of 1.09 mg/mL, while the MIC of A. crassiflora extract was 5.58 mg/mL. No MBC was found for plant extracts. The strains were not able to form biofilms under the conditions studied, however, there was biotransfer and adhesion of E. coli to polypropylene. The highest counts of E. coli cells biotransferred and, consequently, adhere to the polypropylene coupons were observed when 5 log CFU/mL was inoculated, with a mean count of 4.53 ± 0.66 log CFU/cm2. It was verified that the treatment with the extract solutions in the minimum inhibitory concentrations (MIC) totally reduced the number of E. coli cells adhered to the polypropylene coupons. The results obtained indicate that the use of extracts from both species as antibacterials is promising.A atividade antimicrobiana de extratos de folhas de Caryocar brasiliense e Annona crassiflora foi avaliada frente cepas de Escherichia coli através de teste de sensibilidade pelo método de difusão em ágar e pela avaliação das concentrações inibitórias mínimas (CIM) e as concentrações bactericidas mínimas (CBM) pela técnica de microdiluição seguida de plaqueamento. A eficiência sanitizante desses extratos na redução de células de E. coli biotransferidas de folhas de Lactuca sativa para superfícies de polipropileno, foi avaliada após o tempo de exposição de 5 minutos. Todas as cepas foram sensíveis aos antibacterianos e observou-se a formação de halo de inibição para os extratos em estudo frente a todas as cepas testadas. O extrato de C. brasiliense apresentou melhor ação antimicrobiana frente às cepas de E. coli, com CIM de 1,09 mg/mL, enquanto que a CIM do extrato de A. crassiflora foi de 5,58 mg/mL. Não foi encontrada CBM para os extratos vegetais. As estirpes não foram capazes de formar biofilmes nas condições estudadas, no entanto, houve biotransferência e adesão de E. coli ao polipropileno. As maiores contagens de células de E. coli biotransferidas e, consequentemente, aderidas aos cupons de polipropileno foram observadas quando se inoculou 5 log UFC/mL com contagem média de 4,53 ± 0,66 log UFC/cm2. Verificou-se que o tratamento com as soluções dos extratos nas concentrações inibitórias mínimas (CIM), reduziu totalmente o número de células de E. coli aderidas nos cupons de polipropileno. Os resultados obtidos indicam que a utilização dos extratos de ambas as espécies como antibacterianos é promissora.FAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas GeraisengUniversidade Federal de Minas GeraisUFMGBrasilICA - INSTITUTO DE CIÊNCIAS AGRÁRIASICB - DEPARTAMENTO DE MICROBIOLOGIAResearch, Society and DevelopmentAlfaceEscherichia coliBiofilmeContaminação microbianaAgentes antiinfecciososEfficacy of Caryocar brasiliense Camb. and Annona crassiflora Mart. leaves in the reduction of biotransferred Escherichia coli from Lactuca sativa L. leaves to polypropyleneEficácia de extratos de folhas de Caryocar brasiliense Camb. e Annona crassiflora Mart. na redução de Escherichia coli biotransferida de folhas de Lactuca sativa L. para polipropilenoEficacia de hojas de Caryocar brasiliense Camb. y Annona crassiflora Mart. en la reducción de Escherichia coli biotransferida de hojas de Lactuca sativa L. a polipropilenoinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://rsdjournal.org/index.php/rsd/article/view/24268Larissa Lorrane Rodrigues BorgesAlécia Daila Barros GuimarãesFanciellen Morais CostaEduardo Robson DuarteMárcia MartinsRoberta Torres Careliinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFMGinstname:Universidade Federal de Minas Gerais (UFMG)instacron:UFMGLICENSELicense.txtLicense.txttext/plain; charset=utf-82042https://repositorio.ufmg.br/bitstream/1843/52302/1/License.txtfa505098d172de0bc8864fc1287ffe22MD51ORIGINALEfficacy of Caryocar brasiliense Camb. and Annona crassiflora Mart. leaves in the reduction of biotransferred Escherichia coli from Lactuca sativa L. leaves to polypropylene.pdfEfficacy of Caryocar brasiliense Camb. and Annona crassiflora Mart. leaves in the reduction of biotransferred Escherichia coli from Lactuca sativa L. leaves to polypropylene.pdfapplication/pdf243845https://repositorio.ufmg.br/bitstream/1843/52302/2/Efficacy%20of%20Caryocar%20brasiliense%20Camb.%20and%20Annona%20crassiflora%20Mart.%20leaves%20in%20the%20reduction%20of%20biotransferred%20Escherichia%20coli%20from%20Lactuca%20sativa%20L.%20leaves%20to%20polypropylene.pdfdd53a682e97843ca925786fa49478907MD521843/523022023-04-20 17:43:41.463oai:repositorio.ufmg.br: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Repositório InstitucionalPUBhttps://repositorio.ufmg.br/oaiopendoar:2023-04-20T20:43:41Repositório Institucional da UFMG - Universidade Federal de Minas Gerais (UFMG)false
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