decreasing with increasing concentration. The greatest production was achieved after 120 hours of fermentation and subsequently decreased, although it was monitored up to 144 hours. The yields and viscosities values of the xanthan gum
produced from SSAE were higher than those produced from sucrose for the three strains studied. The highest viscosities
and yields were obtained for Xanthomonas campestris 1182 as compared to strains 254 and 629, regardless of the substrate used. The xanthan gums, produced from the alternative medium SSAE using three different strains of Xanthomonas campestris, gave