[A solid culture medium, inducing intensive production of conidia in moulds of the species Aspergillus niger (author's transl)].

Two citric acid-producing strains of the mould Aspergillus niger, cultivated on different sporulation media recommended and well-tried for Aspergilli, showed only poor formation of conidia the harvesting of which was difficult. Starting with a sporulation medium of MOYER et al. and substituting some of the constituents and determining their optimum concentrations, two semi-synthetic media were developed, containing glycerol and/or citric acid.