polysaccharide having natural immune stimulating and natural immune stimulating action, or food or drink comprising the same

摘要

It is an object of the present invention to provide a novel substance having innate immune stimulation activity. A polysaccharide having innate immune stimulation activity is provided, comprising: 25 to 50 parts per mol of galacturonic acid, 15 to 50 parts per mol of galactose, 0 to 7 parts per mol of glucose, 0 to 30 parts per mol of arabinose, 0 to 6 parts per mol of xylose, and 3 to 15 parts per mol of rhamnose as constituent sugars; and a polygalacturonic acid chain as a backbone, having β-1,4-linked galacturonic acid. an innate immune stimulant comprising the polysaccharide as an active component and a food or beverage comprising the polysaccharide are also provided.