Polysaccharide having innate immunity stimulating activity and innate immunity stimulating agent or food and drink comprising thereof

Abstract

A substance having innate immune stimulating activity is a polysaccharide, which contains 25 to 50 parts by mole of galacturonic acid, 15 to 50 parts by mole of galactose, 0 to 7 parts by mole of glucose, 0 to 30 parts by mole of arabinose, 0 to 6 parts by mole of xylose, and 3 to 15 parts by mole of rhamnose as constituent sugars. The polysaccharide has a polygalacturonic acid chain having α-1,4-linked galacturonic acid as a main chain. An innate immune stimulant can include the polysaccharide as an active component, which can be included in a food or drink.

Dependencies are inferred from the claim text.