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| Webber,Bruna; Oliveira,Amauri Picollo de; Pottker,Emanuele Serro; Daroit,Luciane; Levandowski,Rafael; Santos,Luciana Ruschel dos; Nascimento,Vladimir Pinheiro do; Rodrigues,Laura Beatriz. |
| ABSTRACT: We evaluated the influence of temperature on the ability of Salmonella Enteritidis (SE) to form biofilms on stainless steel, polyethylene, and polyurethane surfaces under different hygiene procedures. These materials were placed on SE culture and incubated at 42±1 ºC, 36±1 ºC, 25±1 ºC, 9±1 ºC, and 3±1 ºC for 4, 8, 12, and 24 h. Hot water at 45 ºC and 85 ºC, 0.5% peracetic acid solution, and 1% quaternary ammonia were used for hygienization. Biofilm formation occurred at all temperatures evaluated, highlighting at 3 ºC which has not been reported as an ideal temperature for the adhesion of SE to these materials. The SE adhered more often to polyethylene surfaces than to polyurethane and stainless steel surfaces (P<0.05). Peracetic acid and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salmonella Enteritidis; Biofilms; Surfaces; Hygiene procedures; Food microbiology. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000700452 |
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| Vancin,Franciele Rampazzo; Webber,Bruna; Bondan,Carlos; Daroit,Luciane; Santos,Luciana Ruschel dos; Rodrigues,Laura Beatriz. |
| ABSTRACT: The preservation of milk samples for microbiological analyses by the Brazilian Network of Milk Quality Control Laboratories requires the addition of preservatives to maintain the microbiota from the time of sample collection to the moment of analysis. The number of microorganisms can change as a result of the active ingredients and concentration of the preservative, as well as due to interactions between the preservatives, incubation time, and packaging temperature. The objective of this research was to evaluate the conservation potential of different concentrations of sodium azide and chloramphenicol on the analytical shelf life of milk samples. Two farms were selected, one with a low bacterial count and one with a high bacterial count. The milk... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Milk; Azidiol; Individual bacterial count; Flow cytometry. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000200750 |
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