Formation and characteristics of nitrifying biofilm on a membrane modified with positively-charged polymer chains

Hibiya, Kazuaki; Tsuneda, Satoshi; Hirata, Akira

doi:10.1016/s0927-7765(99)00141-1

Cited by 37 publications

(18 citation statements)

References 11 publications

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“…Terada et al [163] first added negatively charged glycidyl methacrylate (GMA) chains to PE sheets by RIGP and subsequently converted the chains into positively charged diethylamino (DEA) groups by an epoxy-ringopening reaction. Nitrifying bacteria, which have difficulty forming biofilm due to their poor EPS production, successfully formed a biofilm on the DEA-modified PE surface [164,165]. The initial adhesion rate and the amount of bacteria adhered to the DEA-modified surface were 6-10-fold and 3-fold larger, respectively, than those of the original PE surface.…”

Section: Surface Modificationsmentioning

confidence: 95%

Bacterial adhesion: From mechanism to control

Hori

Matsumoto

2010

Biochemical Engineering Journal

627

439

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Section: Surface Modificationsmentioning

confidence: 95%

Bacterial adhesion: From mechanism to control

Hori

Matsumoto

2010

Biochemical Engineering Journal

627

439

View full text Add to dashboard Cite

“…Gottenbos et al (2001) showed that bacterial adhesion to a surface with positive zeta potential is enhanced; however, subsequent biofilm formation is slower, indicating that a positively charged surface adversely affects biofilm formation. On the other hand, Hibiya et al (2000) reported that a nitrifying biofilm, which is difficult to obtain, forms on DEAcontaining sheets successfully under high hydrodynamic conditions. This apparent conflict may be due to the fact that different surface properties, bacterial concentrations and hydrodynamic conditions were used in these studies, and hence it is difficult to systematically summarize the crucial factors in biofilm formation.…”

Section: Effect Of Graft Chain On Bacterial Cell Adhesionmentioning

confidence: 99%

“…In particular, it has been reported that physico-chemical properties, e.g. surface potential, roughness and hydrophobicity, affect the rate of the initial bacterial adhesion and subsequent biofilm formation (Gottenbos et al, 1999(Gottenbos et al, , 2000(Gottenbos et al, , 2001Hibiya et al, 2000;Terada et al, 2005). In view of this link, elucidation of details of the mechanism of initial biofilm formation would be useful for understanding techniques to inhibit or promote the formation of biofilms.…”

Section: Introductionmentioning

confidence: 99%

“…Many surface modification techniques, such as surface abrasion (Morgan & Wilson, 2001), chemical coating (Harris & Richards, 2004) and chemical grafting (Gottenbos et al, 1999(Gottenbos et al, , 2000(Gottenbos et al, , 2001Hibiya et al, 2000;Lee et al, 1996Lee et al, , 1997Lee et al, , 1998Park et al, 1998;Pasmore et al, 2001;Roosjen et al, 2003Roosjen et al, , 2004Terada et al, 2004Terada et al, , 2005Wang et al, 2000), have been used to investigate the possibility of inhibiting or promoting bacterial adhesion and biofilm formation. Radiation-induced grafting technology can generate highly reactive radicals and subsequently initiate the polymerization and extension of long graft chains on common polymer materials such as polyethylene (PE).…”

Section: Introductionmentioning

confidence: 99%

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Bacterial adhesion to and viability on positively charged polymer surfaces

et al. 2006

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Secondary and tertiary amino groups were introduced into polymer chains grafted onto a polyethylene flat-sheet membrane to evaluate the effects of surface properties on the adhesion and viability of a strain of the Gram-negative bacterium Escherichia coli and a strain of the Gram-positive bacterium Bacillus subtilis. The characterization of the surfaces containing amino groups, i.e. ethylamino (EA) and diethylamino (DEA) groups, revealed that the membrane potentials are proportional to amino-group densities and contact angle hysteresis. A high bacterial adhesion rate constant k was observed at high membrane potential, which indicates that membrane potential could be used as an indicator for estimating bacterial adhesion to the EA and DEA sheets, especially in B. subtilis. The bacterial adhesion rate constant of E. coli markedly increased at a membrane potential higher than "7?8 mV, whereas that of B. subtilis increased at a membrane potential higher than "8?3 mV, at which the dominant effect on bacterial adhesion is expected to change. The viability experiments revealed that approximately 80 % of E. coli cells adhering to the sheets with high membrane potential were inactivated after a contact time of 8 h, whereas 60 % of B. subtilis cells were inactivated. Furthermore, E. coli viability significantly decreased at a membrane potential higher than "8 mV, whereas B. subtilis viability decreased as membrane potential increased, which reflects differences in cell wall structure between E. coli and B. subtilis.

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“…It has been reported that physico-chemical properties, e.g. surface potential, roughness and hydrophobicity, affect the rate of the initial bacterial adhesion [17][18][19][20]. Hydrophilic materials are described to be more resistant to bacterial adhesion than hydrophobic materials.…”

Section: Discussionmentioning

confidence: 99%

Influence of polymerized siloxanes on growth of nosocomial aerobic bacteria

Pfeiffer

Baum

Kehlen

et al. 2016

JCB

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Abstract. Health care associated infections are the fourth leading cause of disease in industrialized countries, and the most common complication affecting hospitalized patients. Recently a polymerized siloxane coating substrate was suggested as a promising candidate for the coating of materials which are aimed to be used in cardiovascular tissue engineering. To reduce the risk of tissue remodeling failure after implantation of such engineered tissue implants, coatings substrates for tissue engineering scaffolds might be helpful to lower the risk of bacterial attachment and growth during and after implantation.In the presented study a coating based on polymerized siloxanes was tested with respect to these properties. Tests were performed with aerobic nosocomial bacteria (Escherichia coli and Staphylococcus epidermidis) and an exemplary selection of materials (stainless steel, polycarbonate, soda-lime glass). The siloxane coating was able to significantly reduce bacterial adherence, and it is supposed that this effect is mainly a result of the high hydrophobicity of the coating substrate.

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Formation and characteristics of nitrifying biofilm on a membrane modified with positively-charged polymer chains

Cited by 37 publications

References 11 publications

Bacterial adhesion: From mechanism to control

Bacterial adhesion: From mechanism to control

Bacterial adhesion to and viability on positively charged polymer surfaces

Influence of polymerized siloxanes on growth of nosocomial aerobic bacteria

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