Respiration and Carbohydrate Metabolism of Potato Tuber. Part I

Abstract

The activity of tyrosinase, isolated from potatoes is suppressed in the presence of redox dyes and the composed dehydrogenase systems. The oxygen uptake of potato tuber increases, but after being cut into slices the dehydrogenase activity of tuber decreases in the lapse of time. This increase in oxygen uptake is caused by tyrosinase. Accordingly, tyrosinase does not seem to play the role as a terminal oxidase in the electron transferring systems.