conclusions data reported here indicated that there is no specific genetic combination beyond the quantity of biofilm biomass in s. epidermidis. biofilm biomass seemed to be controlled by rnaiii expression level. further interest should be directed to biofilm dispersal since it seems that the key difference in biofilm biomass ability of s. epidermidis strains relates to factors regulating this ...

In this research, the continuously operated laboratory scale Kaldnes (k1) moving bed biofilm reactors (MBBRs) under partial nitrification-denitrification process were used for treatment of synthetic wastewater containing ammonium and glucose. The Anoxic and Aerobic reactors were filled to 40 and 50 %( v/v) to attach and retain biomass with k1 biofilm carriers, respectively. The favorite interna...

Implanted biomaterials play a key role in current success of orthopedic and trauma surgery. However, implant-related infections remain among the leading reasons for failure with high economical and social associated costs. According to the current knowledge, probably the most critical pathogenic event in the development of implant-related infection is biofilm formation, which starts immediately...

Biofilms in reactors usually grow on impermeable surfaces, and the mass transfer of nutrients biofilms is mainly driven by diffusion, which inefficient especially for thick biofilms. In this study, permeable materials (i.e., nylon meshes) were used as biocarriers a biofilm reactor, their performance was evaluated compared with commercial (PE08 PE10) treating slightly polluted water. The results...

Salmonella enterica is a causative pathogen of Salmonellosis, zoonosis causing global disease and financial losses every year. Pigs may be carriers contribute to the spread humans food products. persist as biofilms. Biofilms are bacterial aggregates embedded in self-produced matrix known withstand disinfectants. We studied effect glutaraldehyde peracetic acid, two active substances frequently u...

introduction: although bacteria producing biofilm are more resistance to antimicrobial agents, biofilm formation can stimulated by sub-minimal inhibitory concentrations (sub-mics) of some antimicrobial agents. therefore, we designed present study to investigate the  in vitro efficacy of several antibiotics (including ceftazidime, piperacillin, ticarcillin, carbenicillin, aztreonam, meropenem, g...