Heat Inactivation of Catalase from Cod Muscle and from Some Psychrophilic Bacteria

Abstract

ABSTRACT Catalase from Pseudomonas sp. and Micrococcus sp. bacteria is inactivated at 93°C and 73°C, respectively, while cod muscle catalase is inactivated at 41°C. This implies that a suitable thermal treatment of a mixture of cod muscle and bacterial catalases will destroy only the cod catalase and leave the bacterial catalase unaltered. The activity of the remaining bacterial catalase is then measured using the disc flotation method.