Investigation of the Effect of Environmental Conditions on the Rate of Exopolysaccharide Synthesis in Azotobacter vinelandii

Abstract

Exopolysaccharide was produced by Azotobacter vinelandii NCIB 9068 grown under a variety of environmental conditions. The rate of exopolysaccharide synthesis from sucrose in continuous culture remained within the range 5 to 14 mg-atom C (g cell)–1 h–1 for specific growth rates of 0·05 to 0·25 h–1, for rates of sucrose utilization of 16 to 105 mg-atom C (g cell)–1 h–1 and for a range of growth-limiting nutrients, including sucrose.