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The Effect of Heat on the Activity of the Enzyme Peroxidase as Found in Milk

Purdue University Agricultural Experiment Station, Department of Dairy Husbandry, Lafayette, Indiana

ABSTRACT

The enzyme peroxidase is the most widely distributed enzyme. It is found in all living organisms, both vegetable and animal tissue, and it has been said when a body fails to show the reaction of peroxidase it is dead. One peculiar property possessed by peroxidase is its resistance to decay, one of the most characteristic properties of living matter. It is still an open question whether peroxidase is a true enzyme, a question which cannot be definitely decided until more knowledge is at hand.

It is only by the action of the enzyme that furnish proof of their existence. Their actions can be investigated by studying the chemical nature of the bodies that are formed and also the rate of change and the conditions affecting it. The function of an enzyme is that of a catalyst, accelerating the action which has already begun, but never appearing among the final products.

¹ Student assistant, 1918.