Increase in the Dehydrogenase Activities of the Pentose Phosphate Pathway in Sweet Potato Root Tissue after Slicing

Abstract

Glucose 6-phosphate and 6-phosphogluconate dehydrogenase activities of sliced sweet potato root tissue increased markedly during aerobic incubation at 30°C in a moist atmosphere. One band of glucose 6-phosphate and at least 3 bands of 6-phosphogluconate dehydrogenase were observed in the disc electrophoresis zymograms of the crude extracts. The marked differences were absent between fresh and sliced tissues. The intensity of the most rapidly migrating band of 6-phosphogluconate dehydrogenase seemed to increase in response to slicing.