Corncob as Carbon Source in the Production of Xanthan Gum in Different Strains Xanthomonas sp.

Xanthan gum (XG) is a biopolymer obtained in fermentation and used as rheology control agent aqueous systems stabilizing emulsions suspensions. XG, together with other polysaccharides, can form soft, cohesive composite gels. The carbon source the fermentative process responsible for one-third of production costs, search less expensive sustainable alternatives ongoing. use agricultural residues such corncob highly suggestive due to their abundance. This study aims evaluate derived hemicellulose fractions from alkaline extraction XG trials using four strains Xanthomonas sp. (629, 1078, 254, S6). results indicate that strain 629 provides higher yield (8.37 ± 5.75 g L−1) while medium containing saccharose (1.25%), (3.75%), salts. In this same medium, produces 3% solution, showing apparent viscosity (9298 31 mPa s−1) at shear rate 10 s−1 25 °C. conclusion, proven be promising alternative obtention improving economic viability within biorefinery context. Saccharose must, however, also included medium.