Abstract:

The aim was to study the changes of oxidoreductase activity of ginseng stems in the different growth stages of growing season. A five-year old ginseng stems as material. Neutral phosphate buffer is selected to extract crude extract. UV was applied to determine the activities of peroxidase (POD), catalase (CAT), polyphenol oxidase (PPO), ascorbate peroxidase (APX). Activity peaks of four kinds of oxidoreductase appeared in the spreading stage, the flowering stage and the fruit growth stage, and the highest was in the fruit growth stage. 4 kinds of enzyme activity were at a low level, and changes of enzyme activity were relatively flat after the root growing after fruit stage. Changes of 4 kinds of enzyme activity in ginseng stem are closely related to stem growth, flower and fruit formation.