HIGHLY VISCOUS POLYSACCHARIDES AND PROCESS FOR THE PREPARATION OF SAID POLYSACCHARIDES

摘要

Novel highly viscous polysaccharides composed mainly of (a) glucose, (b) galactose, (c) mannose, and (d) glucuronic acid, the molar ratio of (a):(b):(c):(d) being 10:3-6:0.5-2:0.5-2 (preferably 10:3-4:1-2:1-2). The invention also provides the process for producing the highly viscous polysaccharides which comprises cultivating a highly viscous polysaccharide-producing microorganism which is an acetic acid bacteria in a nutrient medium until a substantial amount of polysaccharides has accumulated in the nutrient medium, and recovering the accumulated polysaccharides from the nutrient medium.