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Registros recuperados: 6
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Biofilm formation on polystyrene under different temperatures by antibiotic resistant Enterococcus faecalis and Enterococcus faecium isolated from food BJM
Marinho,A.R.; Martins,P.D.; Ditmer,E.M.; d'Azevedo,P.A.; Frazzon,J.; Sand,S.T.Van Der; Frazzon,A.P.G..
The ability of antibiotic resistant E. faecalis and E. faecium isolated from food to form biofilm at different temperatures in the absence or presence of 0.75% glucose was evaluated. A synergistic effect on biofilm at 10 °C, 28 °C, 37 °C and 45 °C and glucose was observed for E. faecalis and E. faecium.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Enterococci; Resistant; Food; Temperatures; Biofilm; Polystyrene.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000200012
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Evaluation of migration models that might be used in support of regulations for food-contact plastics Inra
Begley, T.; Castle, L.; Feigenbaum, A.; Franz, R.; Hinrichs, K.; Lickly, T.; Mercea, P.; Milana, M.R.; O'Brien, A.; Rebre, S.R.; Rijk, R.; Piringer, O..
Materials and articles intended to come into contact with food must be shown to be safe because they might interact with food during processing, storage and the transportation of foodstuffs. Framework Directive 89/109/EEC and its related specific Directives provide this safety basis for the protection of the consumer against inadmissible chemical contamination from food-contact materials. Recently, the European Commission charged an international group of experts to demonstrate that migration modelling can be regarded as a valid and reliable tool to calculate 'reasonable worst-case' migration rates from the most important food-contact plastics into the European Union official food simulants. The paper summarizes the main steps followed to build up and...
Tipo: Journal Article Palavras-chave: Food-contact plastics; Migration; Modelling; Diffusion; Polyolefin; Polystyrene; Polyester; Polyamide.
Ano: 2005 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD200713dba6c7&uri=/notices/prodinra1/2011/05/
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Influence of growth media and temperature on bacterial adhesion to polystyrene surfaces BABT
Zeraik,Ana Eliza; Nitschke,Marcia.
Bacterial adhesion to inert surfaces is a complex process influenced by environmental conditions. In this work, the influence of growth medium and temperature on the adhesion of Pseudomonas aeruginosa, Serratia marcescens, Staphylococcus aureus, Micrococcus luteus and Listeria monocytogenes to polystyrene surfaces was studied. Most bacteria demonstrated the highest adhesion when cultured in TSYEA, except S. marcescens, which showed to be positively influenced by the pigment production, favored in poor nutrient media (lactose and peptone agar). P. aeruginosa adhesion to polystyrene increased at low temperatures whatever the medium used. The culture medium influenced the surface properties of the bacteria as assessed by the MATS test.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacterial adhesion; Biofilms; Hydrophobicity; Polystyrene.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000400012
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Interactions between polystyrene microplastics and marine phytoplankton lead to species-specific hetero-aggregation ArchiMer
Long, Marc; Paul-pont, Ika; Hegaret, Helene; Moriceau, Brivaela; Lambert, Christophe; Huvet, Arnaud; Soudant, Philippe.
To understand the fate and impacts of microplastics (MP) in the marine ecosystems, it is essential to investigate their interactions with phytoplankton as these may affect MP bioavailability to marine organisms as well as their fate in the water column. However, the behaviour of MP with marine phytoplanktonic cells remains little studied and thus unpredictable. The present study assessed the potential for phytoplankton cells to form hetero-aggregates with small micro-polystyrene (micro-PS) particles depending on microalgal species and physiological status. A prymnesiophycea, Tisochrysis lutea, a dinoflagellate, Heterocapsa triquetra, and a diatom, Chaetoceros neogracile, were exposed to micro-PS (2 μm diameter; 3.96 μg L−1) during their growth culture...
Tipo: Text Palavras-chave: Polystyrene; Microplastic; Aggregates; Microalgae; Marine; Phytoplankton.
Ano: 2017 URL: https://archimer.ifremer.fr/doc/00389/50016/50735.pdf
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Production of cocona and jurubeba seedlings in different types of containers Horticultura Brasileira
Guimarães,Marcelo A; Garcia,Manuel Filipe N; Damasceno,Leandro A; Viana,Caris S.
The effect of different containers was evaluated to produce cocona seedlings (Solanum sessiliflorum) and jurubeba (Solanum paniculatum). The experiment was performed in the mesoregion of Alto Solimões, in Benjamin Constant, Amazonas state, Brazil, in a particular production area. The seeding was done in black holed polyethylene bags and polystyrene trays with 128, 200 and 288 cells with volumes of 250.00; 32.61; 21.60 and 9.88 cm³, respectively. We adopted a completely randomized design with four containers, four replicates, being assessed five plants per replicate. The seedlings of cocona were evaluated at 27, 38, 45 and 52 days after sowing (DAS) and of jurubeba at 38, 45, 52, 59 and 66 DAS. We evaluated the number of leaves; length of the main root, the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Solanum sessiliflorum; Solanum paniculatum; Polystyrene; Plastic bag.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000400026
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Quantification of biofilm production on polystyrene by Listeria, Escherichia coli and Staphylococcus aureus isolated from a poultry slaughterhouse BJM
Rodrigues,Laura Beatriz; Santos,Luciana Ruschel dos; Tagliari,Vinícius Zancanaro; Rizzo,Natalie Nadin; Trenhago,Graciela; Oliveira,Amauri Picollo de; Goetz,Franciane; Nascimento,Vladimir Pinheiro do.
This study assessed biofilm formation on polystyrene by Staphylococcus aureus, Listeria monocytogenes, L. welshimeri and Escherichia coli, isolated from a slaughtering plant, grown on tryptic soy broth (TSB) using different glucose concentrations. The tested bacteria produced biofilm in at least one of the concentrations used, and some of them were strong biofilm producers.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Listeria; Escherichia coli; Staphylococcus aureus; Biofilm; Polystyrene.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822010000400029
Registros recuperados: 6
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