Activity Profiles of Primary Metabolism Enzymes in Xanthomonas Campestris Strains During Xanthan Production

ABSTRACT

The activity of enzymes involved in the Entner-Doudor off pathway and citric acid cycle were confronted in high and low xanthan producing strains of Xanthomonas campestris. The effect of citric acid, added at different time intervals on the xanthan biosynthesis was also analyzed. It was shown that the activity of the enzyme pyruvate decarboxylase was 3 times high for the active variant strain ITS 342. Exist time dependence and quantity one for citric acid and intensity of xanthan production and enzyme activity.