title: Automated colorimetric determination of acid proteinase activity in fermentation samples using a trinitrobenzenesulphonic acid reagent.
mesh_terms: D001322:Autoanalysis; D003124:Colorimetry; D010450:Endopeptidases / Q000032:analysis*; D005285:Fermentation; D006454:Hemoglobins; D006863:Hydrogen-Ion Concentration; D009578:Nitrobenzenes; D014302:Trinitrobenzenesulfonic Acid
chemical_list: D006454:Hemoglobins; D009578:Nitrobenzenes; D014302:Trinitrobenzenesulfonic Acid; D010450:Endopeptidases