Culturing structure, methods for preparing and culturing methods for phototrophic microorganisms and related use of a surfactant

The invention relates to a phototrophic for culturing microbial cultivation structure to be used in the form of a portion of a fabric-like material web and a method for their preparation. It also relates to a method for culturing the microorganisms using this cultivation structure and the related use of an anionic surfactant. It is proposed a cultivation structure consisting of an at least predominantly hydrophobic material having their Immobilisierungsflachen for the microorganisms as a result of at least one-time temporary wetting with a wetting agent, a durable hydrophilic structure. For wetting a solution is preferably used which contains at least one surfactant in a concentration of between 10 ppm and 50 ppm. The wetting can be carried out at the first putting the cultivation structure by their used for culturing portions are wetted before the actual cultivation with a with the microorganisms to be inoculated aqueous solution, which in a repeated pass, a surfactant was added previously by the cultivation means.