Critical assessment of suitable methods used for determination of antibacterial properties at photocatalytic surfaces.

This work describes the development of methods necessary for antibacterial effect evaluation on irradiated TiO(2) layers. Two methods using bacteria suspensions and the glass adhesion method (based on ISO 27447:2009(E)) were critically assessed and compared. As test bacteria gram negative Escherichia coli and gram positive Enterococcus faecalis were employed.