XANTHOMONAS POLYSACCHARIDES USABLE IN THE PREPARATION OF AQUEOUS GELS OF IMPROVED FILTRABILITY

摘要

ABSTRACT OF THE DISCLOSURE: The invention relates to the use of polysaccharides of Xanthomonas specially adapted for preparing, by adding water, endowed gels filterability clearly improved properties, characterized in that said polysaccharides are obtained by a process which consists in carrying out the following: a) preparation of the inoculum from a cul-ture of Xanthomonas; b) optionally followed by in-intermediate stage of growth of the microorganism; c) and polysaccharide production by inoculation with the culture after step a) or optionally of step b), of a medium comprising a carbohydrate and a suitable nitrogen source and iron -mentation of this medium; said nitrogen source comprising at least one nitrogen product of organic origin, the amount of said organic nitrogen product, expressed in grams of elemental nitrogen per liter of fermentation medium, being between 0.01 and 0.3 g / l .