title: Influence of Ni2+on urease activity produced by biofilms ofArthrobacter oxydans1388.
abstract: New TiO2-based hybrid materials composed of an organic polymer, cellulose acetate butyrate and copolymer of acrylonitrile acrylamide (AN + AA) were prepared. The effectiveness of immobilization of microbial strainArthrobacter oxydans1388 on the newly synthesized hybrid membranes was investigated by biochemical methods. The obtained results revealed that the matrix more suitable for biofilm formation was composed of organic polymers without a metal component in the membrane composition. The influence of Ni2+on urease activity produced by biofilms was investigated. The experimental results demonstrated that 2 mg L-1concentration of Ni2+in the nutrient medium is more appropriate for biofilm proliferation.
authors.affiliation: Department of Biotechnology, University of Chemical Technology and Metallurgy , Sofia , Bulgaria.
authors.forename: Dessislava
authors.initials: D
authors.lastname: Marinkova
authors.affiliation: Department of Biotechnology, University of Chemical Technology and Metallurgy , Sofia , Bulgaria.
authors.forename: Lyubov
authors.initials: L
authors.lastname: Yotova
authors.affiliation: Université de Cergy-Pontoise, ENS, UMR CNRS 8029, Systèmes et applications des technologies de l'information et de l'énergie (SATIE) , F-95000 , Cergy-Pontoise , France.
authors.forename: Jean-Marie
authors.initials: JM
authors.lastname: Ringeard
authors.affiliation: Université de Cergy-Pontoise, ENS, UMR CNRS 8029, Systèmes et applications des technologies de l'information et de l'énergie (SATIE) , F-95000 , Cergy-Pontoise , France.
authors.forename: Pascal
authors.initials: P
authors.lastname: Griesmar
keywords: Arthrobacter oxydans; biofilms; carrier; micro-organisms; urease activity