Obtaining polissacaru00cddeo type xanthan gum by use of Demerara sugar as a carbon source and nutritional supplement

摘要

Obtaining polissacaru00cddeo type gum Xanana by use of Demerara sugar as a carbon source and nutritional supplement. The present invention relates to a process for obtaining exopolissacaru00eddeos type xanthan gum by use of Demerara sugar as carbon source and addition of nitrientes supplementation.Using the Demerara sugar, the product from the sugar and alcohol industry, rich in carbohydrate, magnesium, phosphorus and potassium, in addition to other fractions consisting of calcium, copper and viaminas B complex, supplemented or not with other nutrient sources in the presence of a strain of xant Homonas in agitated flasks.It was verified a bioconversion from product type to exopolysaccharide xanthan gum with decreasing the need for supplementation of potassium and / or magnesium dependent on the strain uilizada. The invention aims to reduce the cost of production of polysaccharide type xanthan gum when compared to the industrial process of bioconversion of sucrose or glucose.This invention features the optimization of parameters related to the concentration of the carbon source evaluated (Demerara sugar) and nutrient potassium phosphate and magnesium sulfate to obtain polysaccharide.