title: A turbidimetric method for the screening of amylase-producing mutants of Aspergillus niger.
abstract: The method is based on the assumption that extracellular amylase, which is produced by strains of Aspergillus niger in liquid culture, hydrolyses the starch in the media and brings about a corresponding decrease in the turbidity of the media. Mutant strains which produced different quantities of amylase exhibited different degrees of decrease in turbidity of the media. The results showed that a greater degree of decrease in turbidity was observed for a higher quantity of amylase produced.
mesh_terms: D000681:Amylases / Q000032:analysis*; D001230:Aspergillus / Q000201:enzymology*; D001234:Aspergillus niger / Q000145:classification / Q000201:enzymology*; D003470:Culture Media; D009154:Mutation; D009391:Nephelometry and Turbidimetry / Q000379:methods; D013045:Species Specificity
chemical_list: D003470:Culture Media; D000681:Amylases