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	Provedor de dados BJM (29) ArchiMer (9) Ciência Rural (8) Arq. Bras. Med. Vet. Zootec. (5) Rev Salud Anim. (1) Acta Amazonica (1) ABCL (1) BABT (1) BJID (1) Rev. Microbiol. (1) Mais... Autor Leroi, Francoise (8) Brandelli,Adriano (3) Destro,Maria Teresa (3) Pilet, Marie-france (3) Saraoui, Taous (3) Silva,Wladimir Padilha da (3) Brillet, Anne (2) Chevalier, Frederique (2) Costa,Marisa da (2) Destro,M.T. (2) Hofer,Ernesto (2) Lima,Andréia Saldanha de (2) Motta,Amanda S. (2) Passerini, Delphine (2) Piccoli,Roberta Hilsdorf (2) Pilet, Marie France (2) Vallim,Deyse Christina (2) Abirosh,C. (1) Alfieri,Alice Fernandes (1) Alfieri,Amauri Alcindo (1) Mais... Palavra-chave Listeria monocytogenes (57) Biopreservation (7) Virulence (5) Food safety (4) Bacteriocins (3) Lactic acid bacteria (3) Listeriosis (3) Nisin (3) PFGE (3) Salmonella (3) Antimicrobials (2) Bacteriocin (2) Biofilm (2) Biofilms (2) Carnobacterium (2) Cheese (2) Co-culture (2) Cold smoked salmon (2) Escherichia coli (2) Food (2) Mais... Tipo do documento Info:eu-repo/semantics/article (46) Text (9) Info:eu-repo/semantics/other (1) Journal article (1) Ano 2018 (4) 2017 (5) 2016 (3) 2015 (1) 2014 (2) 2013 (8) 2012 (2) 2011 (1) 2010 (4) 2009 (2) 2008 (6) 2007 (3) 2006 (4) 2005 (3) 2004 (4) 2003 (1) 2001 (1) 2000 (2) 1999 (1) Mais... País Brazil (46) France (9) Argentina (1) Cuba (1) Idioma Inglês (46) Português (8) Espanhol (2) Francês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 57 Primeira ... 1 2 3 ... Última Inhibition of listeria monocytogenes in minas frescal cheese by free and nanovesicle-encapsulated nisin BJM Malheiros,Patrícia da Silva; Daroit,Daniel Joner; Brandelli,Adriano. The effectiveness of free and nanovesicle-encapsulated nisin to control Listeria monocytogenes in Minas Frescal cheese was investigated. Commercial nisin was encapsulated into liposomes of partially purified soy lecithin. Free (0.1 mg/mL and 0.25 mg/mL) and nanovesicle-encapsulated nisin (0.25 mg/mL) were applied onto the surface of cheese samples, and L. monocytogenes was inoculated before incubation at 6-8°C for 28 days. A bactericidal effect was observed with 0.25 mg/mL free nisin; a bacteriostatic effect was observed for liposome-encapsulated nisin and 0.1 mg/mL free nisin. Free nisin was more efficient than nisin-loaded liposomes in controlling L. monocytogenes. Possible reasons for this behavior, and also the significance of nisin to soft cheeses are... Tipo: Info:eu-repo/semantics/article Palavras-chave: Nisin; Liposome; Encapsulation; Cheese; Listeria monocytogenes. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000400024 Behaviour of L. monocytogenes in sliced, vacuum-packed mortadella BJM Bersot,Luciano dos Santos; Gillio,Cíntia; Tavolaro,Paula; Landgraf,Mariza; Franco,Bernadette Dora Gombossy de Melo; Destro,Maria Teresa. This study evaluated the growth of naturally occurring L. monocytogenes in sliced, vacuum-packed mortadella samples during storage at 5ºC until the expiration date. Tukey's test indicated that counts of L. monocytogenes on 0, 10, 20, 30 and 40 days of storage were significantly different (p<0.05), indicating growth during shelf life. In three trials, the mean increase was 1.72 log cycles. Vacuum packing and storage under refrigeration were not effective in controlling the growth of L. monocytogenes in sliced mortadella, indicating that good manufacturing practices and implemented HACCP programs are essential to assure safety of this product. Tipo: Info:eu-repo/semantics/article Palavras-chave: Listeria monocytogenes; Growth; Sliced mortadella; Vacuum-packing. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000300020 Molecular analysis of the iap gene of Listeria monocytogenes isolated from cheeses in Rio Grande do Sul, Brazil BJM Mello,Jozi Fagundes de; Einsfeldt,Karen; Frazzon,Ana Paula Guedes; Costa,Marisa da; Frazzon,Jeverson. The polymorphic region sequences in the iap gene were analyzed in 25 strains of Listeria monocytogenes isolated from cheeses in the state of Rio Grande do Sul, and compared with reference strains. This investigation distinguished two clusters of L. monocytogenes: I (20 strains) and II (5 strains). Tipo: Info:eu-repo/semantics/article Palavras-chave: Listeria monocytogenes; Iap gene; Cheese; TN amino acids. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822008000100033 Antimicrobial effect of copper surfaces on bacteria isolated from poultry meat BJM Parra,Angel; Toro,Magaly; Jacob,Ricardo; Navarrete,Paola; Troncoso,Miriam; Figueroa,Guillermo; Reyes-Jara,Angélica. Abstract Poultry meat is a food product that usually carries high rates of microbial contamination, including foodborne pathogens. The poultry industry has established different systems to minimize these hazards. In recent years, extensive literature has demonstrated the antimicrobial activity of different contact surfaces made of copper to effectively reduce microbial loads. The aim of the present study was to evaluate the antibacterial effect of copper surfaces on the transmission of two foodborne pathogens – Salmonella enterica and Listeria monocytogenes – and a poultry native microbiota bacterial species – Enterobacter cloacae. We also evaluated the impact of the poultry meat matrix on the antimicrobial activity of a copper surface. Our results... Tipo: Info:eu-repo/semantics/article Palavras-chave: Antimicrobial copper-alloys; Foodborne pathogens; Salmonella; Listeria monocytogenes; Poultry meat. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822018000500113 Antibacterial activity of bacteriocin-like substance P34 on Listeria monocytogenes in chicken sausage BJM Sant'Anna,Voltaire; Quadros,Deoni A.F.; Motta,Amanda S.; Brandelli,Adriano. The antimicrobial activity of the bacteriocin-like substance (BLS) P34 against Listeria monocytogenes was investigated in chicken sausage. The BLS was applied to chicken sausages (256 AU g-1) previously inoculated with a suspension of 10² cfu g-1 of L. monocytogenes. BLS P34 inhibited the indicator microorganism in situ in all incubation times for up to 10 days at 5 °C. The effectiveness of BLS P34 was increased when it was added in combination with nisin. The bacteriocin was also tested in natural eatable natural bovine wrapping (salty semi-dried tripe) against the same indicator microorganism, also showing inhibitory capability in vitro. BLS P34 showed potential to control L. monocytogenes in refrigerated meat products. Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacteriocin; Chilled chicken sausage; Listeria monocytogenes; Biopreservation. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400019 Survival of Listeria monocytogenes in low acid italian sausage produced under brazilian conditions BJM Degenhardt,Roberto; Sant'Anna,Ernani S. Dry sausages have been considered ready-to-eat products with low risk of causing listeriosis due to the hurdles created during the manufacturing process such as low pH and a w, high salt concentration and presence of lactic acid bacteria (LAB). However, several studies have detected survival of Listeria monocytogenes in these products and also shown that process parameters, LAB and L. monocytogenes strains directly influence the results. In this work, survival of the pathogen in sausages prepared with three different formulations (one standard formulation, one formulation added of Lactobacillus plantarum and one added of 2% sodium lactate), using the manufacturing process usually employed in Brazil, was evaluated. Naturally contaminated sausages presented... Tipo: Info:eu-repo/semantics/article Palavras-chave: Listeria monocytogenes; Lactobacillus plantarum; Fermented dry sausage; Survival; Brazilian salami. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000200024 Evaluation of bacteriocin-producing Lactobacillus sakei 1 against Listeria monocytogenes 1/2a growth and haemolytic activity BJM Martinez,Rafael C.R.; De Martinis,Elaine C.P.. Bacteriocin-producing Lactobacillus sakei 1 was cultivated in Brain-Heart Infusion broth (24 h at 25ºC). The culture supernatant was neutralized, filter sterilized and used to test the activity of bacteriocin against Listeria monocytogenes 1/2a, at 8ºC and 15ºC. Non-bacteriocinogenic Lactobacillus sakei ATCC 15521 was used as a negative control. L. monocytogenes 1/2a was inoculated in culture supernatant medium from L. sakei 1 and L. sakei ATCC 15521 and the listerial populations were determined after 0, 5 and 10 days. The bacteriocin production was quantified as arbitrary units per mL (AU/mL) using agar antagonism test. Additionally, to investigate if L. monocytogenes virulence pattern could be changed after bactericion exposure, the ability of L.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Listeria monocytogenes; Lactobacillus sakei; Bacteriocins; Virulence; Resistance. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000100016 Expression of virulence genes by Listeria monocytogenes J0161 in natural environment BJM Tirumalai,Prem Saran; Prakash,Soam. Majority of studies concerning the gene expression of Listeria monocytogenes have been done on pure culture states. Our objective was to study L.monocytogenes in a co-cultured state and to understand if microbes in their natural state of existence are different in their expression than that of the purely cultured lab grown forms. For a long period discussions have been on the expression of prfA, (which is a virulence gene regulator) in a mammalian host and its role in causing the switch from a saprophytic to pathogenic form of L.monocytogenes. We, in this paper for the first time report the expression of prfA and other virulence genes by L.monocytogenes under different extracellular conditions, and also as a pure culture biofilms, that is different from... Tipo: Info:eu-repo/semantics/article Palavras-chave: Listeria monocytogenes; PrfA; Virulence; Microarray; Biofilms; Co-culture; Gene Expression. Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000200050 Characterization of Listeria monocytogenes isolated from a fresh mixed sausage processing line in Pelotas-RS by PFGE BJM von Laer,Ana Eucares; Lima,Andréia Saldanha de; Trindade,Paula dos Santos; Andriguetto,Cristiano; Destro,Maria Teresa; Silva,Wladimir Padilha da. Listeria monocytogenes is a bacterium capable to adhere to the surfaces of equipment and utensils and subsequently form biofilms. It can to persist in the food processing environmental for extended periods of time being able to contaminate the final product. The aim of this study was to trace the contamination route of L. monocytogenes on a fresh mixed sausage processing line, from raw material to the final product. The isolates obtained were characterized by serotyping and molecular typing by pulsed-field gel electrophoresis (PFGE) using the restriction enzymes ApaI and AscI. L. monocytogenes was detected in 25% of the samples. The samples of raw material were not contaminated, however, the microorganism was detected in 21% of the environmental samples... Tipo: Info:eu-repo/semantics/article Palavras-chave: Listeria monocytogenes; PFGE; Serotyping; Persistent strains. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822009000300021 Microbiological quality and safety assessment in the production of moderate and high humidity cheeses Ciência Rural Prates,Denise da Fontoura; Würfel,Simone Rauber; Goldbeck,Júlia Coswig; Lima,Andreia Saldanha de; Lopes,Graciela Volz; Silva,Wladimir Padilha da. ABSTRACT: Moderate and high humidity cheeses are described as important vehicles of pathogens in many foodborne diseases outbreaks. Microbial contamination can occur in raw material or in the different steps of the product processing due to inadequate hygiene practices. Thus, the aim of this study was to evaluate the microbiological quality and safety in the production of moderate and high humidity cheese. Samples from raw milk, handlers’ hands surface, final product were collected in three cheese manufacturing plants located in southern Brazil, with different levels of sanitary control. Effectiveness of milk pasteurization was also evaluated. Thermotolerant coliforms, coagulase-positive staphylococci (CPS), Salmonella spp., and Listeria monocytogenes were... Tipo: Info:eu-repo/semantics/article Palavras-chave: Listeria monocytogenes; Salmonella spp.; Thermotolerant coliforms; Coagulase-positive staphylococci; Food safety.. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017001100781 Qualidade bacteriológica de queijos artesanais comercializados em estradas do litoral norte do Rio Grande do Sul, Brasil Ciência Rural Zaffari,Cristina Bergman; Mello,Jozi Fagundes; Costa,Marisa da. O consumo de queijo artesanal, vendido em estabelecimentos de beira de estrada, é comum no Estado do Rio Grande do Sul. Geralmente estes produtos não são fabricados em acordo com as boas normas de fabricação e podem constituir perigo à saúde do consumidor. Objetivou-se, com o presente trabalho, verificar a qualidade bacteriológica de queijos artesanais comercializados em estradas litorâneas por meio da contagem de coliformes e pesquisa de Listeria spp. e Brucella spp. Foram analisados 80 queijos, sendo 62 do tipo Colonial, dez do tipo Provolone, seis do tipo Ricota e dois do tipo Caccio Cavallo. No momento da coleta, 71% das amostras não estavam sob refrigeração. Todas as amostras apresentaram contagens de coliformes totais e, destas, 62 foram testadas... Tipo: Info:eu-repo/semantics/article Palavras-chave: Caccio Cavallo; Colonial; Provolone; Ricota; Coliformes; Listeria monocytogenes; Brucella spp. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782007000300040 Desenvolvimento de material de referência para microbiologia de alimentos contendo Listeria monocytogenes em matriz queijo Ciência Rural Brandão,Marcelo Luiz Lima; Costa,Juliana de Castro Beltrão da; Farias,Felipe Miceli de; Rosas,Carla de Oliveira; Bricio,Silvia Maria Lopes; Nascimento,Janaína dos Santos; Leite,Paola Cardarelli. A NBR ISO/IEC 17025:2005, uma das normas mais utilizadas em laboratórios de ensaio, descreve como um de seus critérios para a garantia da qualidade dos resultados analíticos a participação periódica dos laboratórios em ensaios de proficiência (EP). Os analitos, utilizados nos EP são materiais de referência (MR) provenientes de um mesmo lote, e devem apresentar características de homogeneidade e estabilidade. O objetivo deste estudo foi produzir um MR qualitativo destinado ao ensaio de pesquisa de Listeria monocytogenes em matriz queijo pela técnica de liofilização. Para a produção do MR, foi utilizado como matriz o queijo Minas frescal (QMF) ultrafiltrado. A matriz foi distribuída em frascos, contaminada com a bactéria alvo e submetida à liofilização,... Tipo: Info:eu-repo/semantics/article Palavras-chave: Material de referência; Queijo; Listeria monocytogenes. Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782013001000028 Etiologic diagnosis of bovine infectious abortion by PCR Ciência Rural Silva,Teane Milagres Augusto da; Oliveira,Raquel Gonzaga de; Mol,Juliana Pinto da Silva; Xavier,Mariana Noyma; Paixão,Tatiane Alves da; Cortez,Adriana; Heinemann,Marcos Bryan; Richtzenhain,Leonardo José; Lage,Andrey Pereira; Santos,Renato de Lima. Infectious abortion is a significant cause of reproductive failure and economic losses in cattle. The goal of this study was to detect nucleic acids of several infectious agents known to cause abortion including Arcanobacterium pyogenes, Bovine Herpesvirus 1, Brucella abortus, Campylobacter fetus subsp. venerealis, Chlamydophila abortus, Leptospira sp., Listeria monocytogenes, Salmonella sp., Mycoplasma bovis, Mycoplasma bovigenitalium, Neospora caninum, and Tritrichomonas foetus. Tissue homogenates from 42 fetuses and paraffin-embedded tissues from 28 fetuses and 14 placentas/endometrium were included in this study. Brucella abortus was detected in 14.2% (12/84) of the samples. Salmonella sp. DNA was amplified from 2 fetuses, and there was one positive... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cattle; Abortion; Brucella abortus; Salmonella sp.; Neospora caninum; Listeria monocytogenes. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000900028 Surto de listeriose sistêmica em chinchilas Ciência Rural Kirinus,Jackeline Karsten; Krewer,Carina; Zeni,Diego; Monego,Fernanda; Silva,Marcia Cristina da; Kommers,Glaucia Denise; Vargas,Agueda Castagna de. A listeriose é uma doença infecciosa que afeta uma grande variedade de espécies animais, causando septicemia, encefalite e aborto. As chinchilas são os animais mais susceptíveis à infecção sistêmica por Listeria monocytogenes. Este relato descreve um surto de listeriose sistêmica em uma criação de chinchilas da região central do Estado do Rio Grande do Sul, onde cerca de 16% das chinchilas morreram. Na necropsia, havia múltiplos focos brancos, pequenos e de distribuição aleatória nas superfícies capsular e de corte do fígado e aumento de volume do linfonodo hepático. Histologicamente, observaram-se hepatite necrossupurativa e linfadenite supurativa multifocais, com numerosos bacilos intralesionais. L. monocytogenes foi o agente etiológico do surto de... Tipo: Info:eu-repo/semantics/article Palavras-chave: Doenças de chinchilas; Listeria monocytogenes; Bacteriologia; Patologia. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000300033 Antimicrobial activity of autoclaved and non autoclaved copaiba oil on Listeria monocytogenes Ciência Rural Pieri,Fábio Alessandro; José,Raphaela Mansur; Galvão,Newton Nascentes; Nero,Luis Augusto; Moreira,Maria Aparecida Scatamburlo. The aim of this study was to evaluate the antimicrobial effect of different copaiba oil concentrations against the growth of Listeria monocytogenes, and analyze differences in inhibition of microorganisms with autoclaved and non autoclaved oil. This study provided an agar diffusion test with six isolates of bacteria and six different concentrations of autoclaved or non autoclaved copaiba oil and a negative control. The results showed sensitivity of five L. monocytogenes isolates related to the 10% autoclaved solution of copaiba oil. Four strains also showed sensitivity to the 5% autoclaved solution and one to 2.5% autoclaved solution. The 10% non autoclaved oil solution showed growth inhibition only for two strains. These results had pointed the 10%... Tipo: Info:eu-repo/semantics/article Palavras-chave: Phytotherapics; Copaifera; Antimicrobial drugs; Listeria monocytogenes. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000800020 Listeria spp. no processamento de lingüiça frescal em frigoríficos de Pelotas, RS, Brasil Ciência Rural Silva,Wladimir Padilha da; Lima,Andréia Saldanha de; Gandra,Eliezer Ávila; Araújo,Márcia Ribeiro de; Macedo,Márcia Raquel Pegoraro de; Duval,Eduarda Hallal. Alimentos intensamente manipulados, como as lingüiças mistas do tipo frescal são freqüentemente responsáveis pela veiculação de enfermidades transmitidas por alimentos. Devido ao risco à saúde pública que a bactéria Listeria monocytogenes representa, este trabalho teve como objetivo estudar a presença de Listeria spp., em especial de L. monocytogenes, durante o processamento de lingüiças mistas do tipo frescal, em três frigoríficos com inspeção sanitária estadual, em Pelotas-RS. Para isso, analisou-se a matéria-prima utilizada no preparo da lingüiça, os equipamentos da linha de processamento e o produto final. Isolou-se Listeria spp. em 100% das 41 amostras analisadas, nos 3 estabelecimentos estudados. Dentre as diferentes espécies, L. innocua foi aquela... Tipo: Info:eu-repo/semantics/article Palavras-chave: Listeria spp; Listeria monocytogenes; Lingüiça frescal; Planta de processamento. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000300039 Ocorrência e diferenciação de espécies de Listeria spp. em salsichas tipo hot dog a granel e em amostras de carne moída bovina comercializadas no Distrito Federal Ciência Rural Andrade,Rafael Rocha de; Silva,Patrícia Helena Caldeira da; Souza,Nara Rúbia; Murata,Luci Sayori; Gonçalves,Vitor Salvador Picão; Santana,Angela Patrícia. Listeria monocytogenes é um patógeno relevante veiculado por alimentos. Sua identificação precisa é importante para a correta determinação do risco associado à ingestão do alimento. O objetivo deste trabalho foi verificar a ocorrência das espécies de Listeria spp. em amostras de salsichas tipo hot dog e carne moída bovina, comercializadas a granel no Distrito Federal. Foram analisadas 162 amostras, sendo 127 de salsichas tipo hot dog e 35 amostras de carne moída bovina. O isolamento e a identificação do gênero foram feitos por metodologia convencional e a distinção das espécies foi verificada por kit bioquímico específico (API-Listeria®) e por análise de restrição de fragmentos da reação em cadeia da polimerase (RFLP-PCR) do gene 23 rRNA. Foram isoladas 26... Tipo: Info:eu-repo/semantics/article Palavras-chave: Listeria monocytogenes; Produtos cárneos; PCR. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014000100024 Registros recuperados: 57 Primeira ... 1 2 3 ... Última

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