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| Ferreira,Alessandra Einsfeld; Canal,Natália; Morales,Daiana; Fuentefria,Daiane Bopp; Corção,Gertrudes. |
| The aim of this study was to characterize bacteriocins produced by 70 strains of Enterococcus mundtii.Four strains exhibited antibiotic activity towards Listeria innocua, L. monocytogenes, Lactobacillus plantarum, and Salmonella Enteritidis. They remained active under temperatures of up to 121ºC for 20 min, and under pH treatments that varied from 2.0 to 10.0. Antimicrobial activity was maintained during the storage test for 60 days under freezing. The kinetics of production revealed the peak activity of 1600 AU /mL during the logarithmic growth phase and the molecular weight found was approximately 3.0 kDa. The characterization of the products with antimicrobial activity indicated their proteic nature, presenting a typical kinetics of primary metabolite... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enterococcus mundtii; Enterocins; Antimicrobial activity; Biopreservative. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000200010 |
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| Gusatti,Carolina de Souza; Bertholdo,Lauren Martins; Otton,Letícia Muner; Marchetti,Desirée Padilha; Ferreira,Alessandra Einsfeld; Corção,Gertrudes. |
| This is the first report of an Acinetobacter baumannii from clinical origin carrying the blaOXA-58 gene in Brazil. The isolate included in this study was from a patient during an outbreak in Porto Alegre, RS, Southern Brazil, in 2007. It was resistant to most of the beta-lactams tested, it has also the blaOXA-65 gene and the ISAba1 sequence located upstream to both blaOXA genes detected and it has a MIC of imipenem of 64 μg/mL. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: BlaOXA-58; ISAba1; BlaOXA-65; Carbapenemases; Acinetobacter baumannii. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822012000100027 |
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| Silva,Silvia R. Pavan da; Verdin,Sylvia E. Frizzo; Pereira,Dariane C.; Schatkoski,Aline M.; Rott,Marilise B.; Corção,Gertrudes. |
| Minimally processed vegetables go through various steps during their preparation, with many modifications to their natural structure. However, they must maintain the same quality as the fresh produce. The aim of the present study was to quantify mesophilic and psychrotrophic microorganisms and total and faecal coliforms, and to assess the presence of Escherichia coli, parasites, and dirt material in ready-to-eat minimally processed vegetables. Fifty-six samples of minimally processed vegetables were analysed for the presence of mesophilic and psychrotrophic microorganisms by the plate-count method. Monthly means ranged from 4.7x10(5) to 1.6x10(8) CFU/g and from 7.9x10(6) to 2.7x10(8) CFU/g, respectively for mesophilic and psychrotrophic microorganisms.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Minimally processed vegetables; Microbiologic quality; Parasitological analysis. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822007000400003 |
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| Flach,Juliana; Grzybowski,Valeska; Toniazzo,Geciane; Corção,Gertrudes. |
| Biofilms in milk cooling tanks compromise product quality even on farms. Due to the lack of studies of this topic, this study evaluated the microbiological conditions of raw milk cooling tanks on farms and characterized the microorganisms isolated from these tanks. Samples were wiped off with sterile swabs from seven milk cooling tanks in three different points in each tank. Mesophiles and psychrotrophic counts were performed in all samples. The isolation of Pseudomonas spp., Bacillus cereus and atypical colonies formed on selective media were also performed, totalizing 297 isolates. All isolates were tested for protease and lipase production and biofilm formation. Of the total isolates, 62.9% produced protease, 55.9% produced lipase, and 50.2% produced... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Psychrotrophic bacteria; Cleaning process; Lipase; Protease. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612014000300020 |
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