A highly cellulosic exopolysaccharide produced from sugarcane molasses by a Zoogloea sp

摘要

Brazilian Zoogloea sp. bacterium produced from sugarcane molasses a polymer substance containing glucose (87.6 percent), xylose (8.6 percent), mannose (0.8 percent), ribose (1.7 percent), galactose (0.1 percent), arabinose (0.4 percent) and glucuronic acid (0.8 percent). Methylation analysis of the polysaccharide showed mainly 2,3,6-tri-O-methylhexitol (74.7 percent) and 2,3-di-O-methylhexitol (17.7 percent). Enzyme hydrolysis of the polysaccharide with a cellulase confirmed the presence of (l->4)-beta-D-glucopyranosyl units.