Studies on xanthan production from Xanthomonas campestris

Xanthan is an heteropolysaccharide produced by Xanthomonas campestris. Xanthan gum fermentation by a local isolate of X. campestris using different carbon sources was studied. The production of polysaccharide was influenced by the carbon source used. The production of the xanthan was 15.654 g/l with synthetic medium. Production of xanthan at various temperatures ranging between 25 degreesC and 40 degreesC was studied. The growth and production was maximum between 25-30 degreesC. Xanthan production was maximum at pH 7.0-7.5.