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| Registros recuperados: 12 | |
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| Sánchez,Lilian; Omura,Michele; Lucas,Adams; Pérez,Tania; Llanes,Marisleidys; Ferreira,Celia de Luce. |
| Se caracterizaron in vitro 17 cepas de Lactobacillus spp. aisladas del tracto intestinal de terneros neonatos, para seleccionar las mejores como candidatos probióticos y realizarles posteriormente los estudios in vivo. A todos los aislados se les realizó la prueba de la catalasa, la tinción de Gram y se estudió sus características culturales para su identificación preliminar. Se evaluó su capacidad probiótica mediante pruebas in vitro como fueron el crecimiento a diferentes temperaturas (30, 37 y 45°C), pH (2,5; 3,4; 5,4; 6,4) y capacidad de acidificación del medio de cultivo. Se preseleccionaron 10 cepas de Lactobacillus spp. que crecieron en todas las condiciones evaluadas. Se destaca el crecimiento de células viables de 6,7-10 log UFC/ml que... |
| Tipo: Journal article |
Palavras-chave: Lactobacillus spp.; Probiótico; Salmonella sp.; Staphylococcus aureus; Escherichia coli; Listeria monocytogenes. |
| Ano: 2015 |
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S0253-570X2015000200004 |
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| Michael,Geovana Brenner; Simoneti,Roselis; Costa,Marisa da; Cardoso,Marisa. |
| A two-phase study was conducted to compare the efficacy of several enrichment selective-broth steps associated to different plating media for recovery of Salmonella sp. from finishing swine feces. In a first phase, Rappaport-Vassiliadis broth (RV) incubated at 42ºC, Tetrathionate Müller-Kauffmann broth at 37ºC (TMK37) and 42ºC (TMK42), and Selenite Cystine broth (SC) at 37ºC, in combination with three selective plating media Rambach agar (RA), Xylose-Lysine-Tergitol 4 agar (XLT4), and Brilliant-Green Phenol-Red Lactose Sucrose agar (VB) were compared for recovery of Salmonella from artificially contaminated swine feces. In a second phase, RV, TMK37, and TMK42, associated with XLT4 and VB , were tested with naturally contaminated swine feces. In this study... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salmonella sp.; Selective enrichment; Swine. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822003000200009 |
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| 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 |
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| GUATEMIM,Edailson Luís Xavier; SILVEIRA,Sheila Mello da; MILLEZI,Alessandra Farias; FERENZ,Mariane; COSTA,Karine Dalla; ROSSI,Paula; BAMPI,Gabriel Bonetto. |
| Abstract Ricotta cheese has low fat and salt contents and a high quantity of proteins. The diversity of the nutrients and the high water content are factors that favor the development of microorganisms in this product. In this context, the aim of this study was to evaluate the microbiological quality of ricotta commercialized in the western region of Santa Catarina State, Brazil. Thirty samples, comprising 10 different brands of ricotta, were collected and sent to the Food Microbiology Laboratory at the Instituto Federal Catarinense (IFC), Campus Concórdia for microbiological analysis to determine the presence of Salmonella sp., Listeria sp., coagulase-positive Staphylococcus and thermotolerant coliforms. Of the 30 samples, the results for 33.3% were not... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salmonella sp.; Listeria sp.; Coagulase-positive Staphylococcus; Thermotolerant coliforms; Listeria grayi. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612016000400612 |
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| Ferrari,Rafaela Gomes; Galiana,Antonio; Cremades,Rosa; Rodríguez,Juan Carlos; Magnani,Marciane; Tognim,Maria Cristina Bronharo; Oliveira,Tereza C.R.M.; Royo,Gloria. |
| Several studies have been conducted in recent years to elucidate the structure, function and significance of AcrB, MarA, SoxS and RamA in Salmonella enterica. In this study, the relative quantification of acrB, soxS, marA and ramA genes expression was evaluated in 14 strains of S. enterica, with or without accompanying mutations in the quinolone resistance-determining regions of the gyrA gene, that were exposed to ciprofloxacin during the exponential growth phase. The presence of ciprofloxacin during the log phase of bacterial growth activated the genes marA, soxS, ramA and acrB in all S. enterica strains analyzed in this study. The highest expression levels for acrB were observed in strains with gyrA mutation, and marA showed the highest expression in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salmonella sp.; Fluoroquinolone; Efflux pump; Antibiotic resistance. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702013000200002 |
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| Castagna,S.M.F.; Schwarz,P.; Canal,C.W.; Cardoso,M.. |
| Estudou-se a associação entre o isolamento de Salmonella sp. do trato intestinal de suínos ao abate e sua presença em tonsilas/linfonodos submandibulares (T/LS), utilizadas no preparo de embutidos. Colheram-se linfonodos mesentéricos (LM), conteúdo intestinal (CI) e T/LS de 90 animais. Em 71 (79%) deles isolou-se Salmonella sp. em pelo menos uma das amostras coletadas. Observou-se associação entre amostras de T/LS positivas e isolamento de Salmonella sp. a partir de LM e/ou CI (P<0,001), com odds ratioLTpositivo 5,6. T/LS de outros 75 animais foram processados separadamente, verificando-se associação (P< 0,0001) entre T/LS e isolamento de Salmonella. Os sorovares mais encontrados foram Typhimurium e Bredeney. Conclui-se que a presença de Salmonella... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Suíno; Salmonella sp.; Linfonodos submandibulares; Tonsilas; Trato intestinal. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352004000300003 |
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| Registros recuperados: 12 | |
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