Characterization of antibacterial polyethersulfone membranes using the respiration activity monitoring system (RAMOS)

Membranes with antibacterial properties were developed using surface modification of polyethersulfone ultrafiltration membranes. Three different modification strategies using polyelectrolyte layer-by-layer (LbL) technique are described. The first strategy relying on the intrinsic antibacterial properties of poly(diallyldimethylammonium chloride)...

Comparison of probabilistic approaches to estimate the initial bacterial levels as a start in exposure assessment: Escherichia coli O157:H7 in beef as an example

The initial contamination of food products with pathogens is an important risk factor in microbial risk assessments. This factor contains variability and uncertainty that can be calculated from various available monitoring results. When performing dedicated quantitative risk assessments, different methods can be chosen to transform the data into...

Intracellular and extracellular production of proteins in Aspergillus under the control of expression signals of the highly expressed Aspergillus nidulans gpdA gene

The expression in Aspergillus is described of genes, coding for intracellular and extracellular proteins controlled by the promoter region of the constitutively and efficiently expressed glyceraldehyde-3-phosphate dehydrogenase gene (gpdA) of Aspergillus nidulans. Both the homologous gpdA and the heterologous Escherichia coli β-galactosidase ...