Photografting of glycidylmethacrylate (GMA) onto commercially available polystyrene-microtitre plates was carried out in methanol as well as butanol with benzophenone (BP) as photoinitiator. Alternatively, prepolymers of polyglycidylmethacrylate (PGMA) were synthesized in methanol with azo-iso-butyrodinitrile (AIBN) as initiator and dip-coated onto polystyrene-microtitre plates. Both modification methods were tested in order to reach a high binding capacity for proteins. Peroxidase was used as model protein. In addition, the immobilization of myelin basic protein (MBP) to epoxy-modified microtitre plates is shown and a MBP-based ELISA has been developed.
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http://dx.doi.org/10.1016/s0142-9612(99)00098-8 | DOI Listing |
PLoS One
September 2023
Department of Microbiology, Faculty of Agriculture and Forestry, University of Helsinki, Helsinki, Finland.
Psychrotrophic bacteria of raw milk face the dairy industry with significant spoilage and technological problems due to their ability to produce heat-resistant enzymes and biofilms. Despite extensive information about Gram-negative psychrotrophic bacteria in milk, little is known about Gram-positive psychrotrophic bacteria in milk, and their proteolytic activity and biofilm-forming characteristics. In the present study, Gram-positive, proteolytic, psychrotrophic bacteria of cold raw milk were identified, and their proteolytic activity and biofilm-forming capacity were quantified.
View Article and Find Full Text PDFLett Appl Microbiol
March 2022
Programa de Pós-Graduação em Ciências Farmacêuticas, Faculdade de Farmácia, Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil.
Often associated to the colonization by Candida spp. biofilm, the catheter-related infections are a serious health problem since the absence of a specific therapy. Hence, the main objective of this work was to evaluate the activity of 8-hydroxyquinoline and quinazoline derivatives on Candida spp.
View Article and Find Full Text PDFJ Med Microbiol
August 2021
Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil.
Biofilm formation is a major virulence factor associated with infections. However, the influence of plasma proteins on biofilm formation of clinical isolates remains unclear. We hypothesized that coating surfaces with plasma proteins might induce biofilm formation by of different clonal lineages.
View Article and Find Full Text PDFClin Microbiol Infect
November 2020
APHP-GHU Nord, Mycobactériologie spécialisée et de référence, laboratoire associé du Centre National de référence des mycobactéries et de la résistance des mycobactéries aux antituberculeux (CNR-MyRMA), Paris, France; Université de Paris, INSERM, IAME UMR1137, Paris, France. Electronic address:
Scope: Several methods are used worldwide for antibiotic susceptibility testing (AST) for the Mycobacterium tuberculosis complex (MTBC). The variability in the results obtained with these methods hampers setting epidemiological cut-off (ECOFF) values and clinical breakpoints according to EUCAST guidelines. Methods for susceptibility testing and determination of the minimal inhibitory concentrations (MICs) need to be standardized for MTBC isolates for old and new agents.
View Article and Find Full Text PDFInt J Food Microbiol
March 2020
Food Safety Department, Teagasc Food Research Centre, Ashtown Dublin 15, Ireland. Electronic address:
Due to its ubiquitous nature, Listeria monocytogenes is a threat to all fresh fruits and vegetables, including mushrooms, which are Ireland's largest horticultural crop. Although fresh cultivated mushrooms (Agaricus bisporus) have not been previously linked with listeriosis outbreaks, the pathogen still poses a threat to the industry, particularly due to its ability to form biofilms. This threat is highlighted by the multiple recalls of mushroom products caused by L.
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