Date extract as a carbon source for the production of xanthan gum by the bacterium xanthomonas campestris

الملخص EN

This study was designated to evaluate the influence of incubation periods, different carbon concentrations in the form of date extract and different nitrogen sources, on the production of exopolysaccharide “xantha gum” by previously isolated and characterized bacterium Xanthomonas campestris MU1.

Maximum xanthan gum accumulated was observed in date extract medium of 4% sugar containing ammonium nitrate as nitrogen source after 4 day of incubation, yielding 0.85g/100ml at agitation rate of 150RPM of rotary incubator.

The final pH of the tested media was declined owing to the acidic nature of the accumulated xanthan.