CULTURE SUBSTRATE COMPRISING CELLULOSE GEL, SOLID MEDIUM USING SAME, AND CELLULASE ACTIVITY ASSAY METHOD USING MEDIUM

摘要

The present invention provides: a cellulose gel medium providing good visibility of microbial colonies, which improves on the weaknesses of the cellulose gel media of the prior art; a cellulose gel culture substrate for manufacturing the cellulose gel medium and a method for manufacturing the cellulose gel culture substrate; and a method for screening cellulase-producing micro-organisms or cellulase activity with greater efficiency and rapidity. One embodiment of the present invention is a culture substrate comprising a cellulose gel containing cellulose and water as medium-solidifying components, said cellulose characterized in that the viscosity at 26°C of a solution in which the cellulose has been dissolved at a concentration of 2.5 mg/mL in dimethylacetamide containing 8% (w/v) lithium chloride is 12 to 35 mPa·S.