Studies on Sweet Potatoes Rich in Carotene (Report II)

On the General Components and its Changes during Storage of Sweet Potatoes

Abstract

In this report, the general components of various kinds of sweet-potatoes and their amylase activity were measured, and the changes of several components during their storage were investigated.
Total soluble sugar content of sweet potatoes rich in carotene were more than those of poor carotene, and starch content less generally.
At the harvest time, starch content was high, and then it decreased gradually with the process of their storage. On the other hand, the content of reducing and total soluble sugar were low at the harvest time, and they increased markedly till December,
In the following stage of storage total soluble sugar content continued to increase, but reducing sugar content showed no change.