Zur Beeinflussung der Aktivität von adsorptiv auf eloxierten Aluminiumblechen immobilisierter Urease durch die Anodisier-Bedingungen / The Influence of Anodizing Conditions on the Activity of Urease Immobilized to Anodized Sheet Aluminium

: The activity of urease immobilized by adsorption on anodized sheet aluminium strongly depends on the method chosen for preparation of these carriers. If oxalic acid is applied as electrolyte, only the anodizing temperature significantly influences the activity of the preparations. In case of the well-known GS process, however, the activity is not only affected by the temperature, but also by other conditions of anodizing, for example the current density and the electrolyte concentration. For both methods the correlation between the topography of the carrier surfaces and the activity of enzyme immobilized to the surface is described.