Production of Alternansucrase byLeuconostoc mesenteroidesNRRL B-1355 in Batch Fermentation with Controlled pH and Dissolved Oxygen

The effect of controlled pH and dissolved oxygen (DO) tension on the production of total glucosyltransferase activity (GTF), extracellular GTF and alternansucrase was studied in controlled batch fermentations of Leuconostoc mesenteroides NRRL B-1355. Controlled aeration had a positive effect on the production of extracellular GTF in pH-uncontrolled fermentations. An aerated batch fermentation controlled at 90% DO at controlled pH 6·7 resulted in...