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Antimicrobial activity of autoclaved and non autoclaved copaiba oil on Listeria...
Pieri, Fábio Alessandro; José, Raphaela Mansur; Galvão, Newton Nascentes; Nero, Luis Augusto; Moreira, Maria Aparecida ScatamburloOs objetivos deste estudo foram avaliar o efeito antimicrobiano de diferentes concentrações de óleo de copaíba contra o crescimento de Listeria monocytogenes e analisar as diferenças na inibição do microorganismo com soluções do óleo autoclavadas e não autoclavadas. Para tanto, foi realizado um teste de difusão em ágar, com seis isolados do microrganismo originários de produtos cárneos, seis concentrações de am...
Increase in biofilm formation by Escherichia coli under conditions that mimic t...
Costa, João Carlos Miguel; Espeschit, Isis de Freitas; Pieri, Fábio Alessandro; Benjamin, Laércio Anjos; Moreira, Maria Aparecida ScatamburloBiofilmes bacterianos estão envolvidos no agravamento e recorrência de mastite clínica em rebanhos leiteiros. Vários fatores, tais como o pH, temperatura, concentração de O2 e glicose podem afetar sua indução e suas taxas de crescimento. Neste estudo, a produção de biofilme foi demonstrada por 27 isolados de Escherichia coli de mastite bovina a valores de pH diferentes, dependendo da disponibilidade de glucose,...
Adequacy of Petrifilm™ Aerobic Count plates supplemented with de Man, Rogosa & ...
Castilho, Natália Parma Augusto de; Okamura, Vivian Tiemi; Camargo, Anderson Carlos; Pieri, Fábio Alessandro; Nero, Luís AugustoThe present study aimed to assess the performance of alternative protocols to enumerate lactic acid bacteria (LAB) in salami. Fourteen cultures and two mixed starter cultures were plated using six protocols: 1) Petrifilm™ Aerobic Count (AC) with MRS broth and chlorophenol red (CR), incubated under aerobiosis or 2) under anaerobiosis, 3) MRS agar with CR, 4) MRS agar with bromocresol purple, 5) MRS agar at pH 5....
Genetic diversity and some aspects of antimicrobial activity of lactic acid bac...
Cavicchioli, Valéria Quintana; Dornellas, Wesley dos Santos; Perin, Luana Martins; Pieri, Fábio Alessandro; Franco, Bernadette Dora Gombossy de MeloLactic acid bacteria (LAB, n = 57) were previously obtained from raw goat milk, identified as Lactococcus spp. (n = 24) and Enterococcus spp. (n = 33), and characterized as bacteriocinogenic. Fingerprinting by pulsed field gel electrophoresis (PFGE) demonstrated high genetic diversity, and 30 strains were selected and exhibited strong antimicrobial activity against 46 target strains (LAB, spoilage, and foodborn...
Use of β-caryophyllene to combat bacterial dental plaque formation in dogs
Pieri, Fábio Alessandro; Souza, Marina Campos de Castro; Vermelho, Ligia Lobato Ramos; Vermelho, Marina Lobato Ramos; Perciano, Pedro GriffoPeriodontal disease is a highly prevalent illness that affects many dogs, reaching up to 85 % prevalence in individuals over the age of 4 years. Currently the drug of choice for combating the formation of dental plaque in these animals, the etiologic agent of the disease, is chlorhexidine, which has several side effects reported. Thus, surveys are conducted throughout the world in order to identify potential su...
Atividade antimicrobiana do óleo de copaíba (Copaifera langsdorffii) e seus con...
Pieri, Fábio AlessandroCoordenação de Aperfeiçoamento de Pessoal de Nível Superior; Periodontal disease affects about 85% of dogs older than four years and is caused by the buildup of plaque on the tooth surface and its body's reaction.In other work, Copaiba oil presented positive results in the inhibition of dental plaque in dogs, however the literature do not present any study that identifying this activity against bacteria from do...