[Kinetics of germ killing and damage to selected bacterial enzymes by thermal and chemical influences. III. Damage to enzymes from Bacillus subtilis by disinfectants compared to bacterial count reduction].

In the present paper a trial is reported to determine the efficacy of disinfectants by common bacteriological means as well as by biochemical methods. The results are compared, and they reveal a remarkable correlation (r = -0.9476) between the velocity constants of disinfection (1/kw) and the lg 1/Ki(app). The Ki(app)-value is the inhibition constant for the competitive inhibition of the creatine kinase reaction from Bacillus subtilis by disinfectants. The practical impacts are discussed.