摘要：In order to study the effect of free chlorine in city water on digestive enzymes, inhibition of the activities of crystalline enzyme preparations was measured at various concentrations of hypochlorite. Most of the enzymic activities were found to be somewhat affected at the concentration as small as 0.2 ppm of free chlorine, while swine pancreatic amylase exhibited a slight insensitivity. More than 40% of the activities of all enzymes tested were inhibited by the concentration of 1.0 ppm of chlorine under the experimental conditions used in this study.
