D-Xylonic Acid Production by Enterobacter Cloacae

Abstract

A D-xylose-utilizing bacterium, identified as Enterobacter cloacae, was isolated from soil. The bacterium produced D-xylonic acid (190mg/ml) when grown aerobically at 30°C for 5 days in a medium containing 20% D-xylose, 0.2% (NH4)2SO4, 0.1% KH2PO4, 0.05% MgSO47H2O, 0.2% C. S. L. and 8.0% CaCO3 at pH 6.5. The bacterium could also produce acidic substances from L-arabinose, D-glucose, D-galactose, D-mannose, maltose, and lactose. D-Gluconic acid was obtained in the yield of more than 90% from 30% D-glucose. © 1973, Japan Society for Bioscience, Biotechnology, and Agrochemistry. All rights reserved.