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Growth, viability and architecture of biofilms of Listeria monocytogenes formed on abiotic surfaces BJM
Reis-Teixeira,Fernanda Barbosa dos; Alves,Virgínia Farias; Martinis,Elaine Cristina Pereira de.
Abstract The pathogenic bacterium Listeria monocytogenes can persist in food processing plants for many years, even when appropriate hygienic measures are in place, with potential for contaminating ready-to-eat products and, its ability to form biofilms on abiotic surfaces certainly contributes for the environmental persistence. In this research, L. monocytogenes was grown in biofilms up 8 days attached to stainless steel and glass surfaces, contributing for advancing the knowledge on architecture of mature biofilms, since many literature studies carried out on this topic considered only early stages of cell adhesion. In this study, biofilm populations of two strains of L. monocytogenes (serotypes 1/2a and 4b) on stainless steel coupons and glass were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Listeria monocytogenes; Abiotic surfaces; Persistence; Biofilms.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300587
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Partial purification and characterization of a bacteriocin produced by Enterococcus faecium 130 isolated from mozzarella cheese Ciênc. Tecnol. Aliment.
Tulini,Fabrício Luiz; Gomes,Bruna Carrer; Martinis,Elaine Cristina Pereira de.
Lactic acid bacteria are important in foods as potential probiotics and also due to the ability to produce antimicrobial compounds that can contribute for biopreservation. In this work, the bacteriocin produced by the food isolate Enterococcus faecium 130 was partially purified and characterized. The compound was active against Gram-positive bacteria, including Listeria monocytogenes. It was produced after 4 days of storage at a broad temperature range (4 to 37 °C); it was stable at pH ranging from 2 to 10 with no loss of activity after heating at 100 °C for 15 minutes. Bacteriocin was partially purified by the adsorption-desorption technique, and the analysis by sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) showed a molecular mass...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Enterococcus faecium; Bacteriocin; Purification; SDS-PAGE; Foods; Listeria monocytogenes.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612011000100022
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