[Screening for cellulolytic bacteria with the cellulose-azure test (author's transl)].

As the classical methods involving the clearing of opaque cellulose-agar media are not satisfying, a simple method utilizing cellulose-azure as a substrate has been adapted to detect cellulolytic activity of bacteria. This precise method may be combined with a primary growth on carboxymethyl-cellulose-agar to screen for cellulase-producing strains.