Isomaltohexose is an oligosaccharide composed of six glucose units, characterized primarily by α-1,6 glycosidic linkages, which distinguish it from maltohexose that contains α-1,4 linkages. It belongs to the class of isomalto-oligosaccharides (IMOs), known for their prebiotic properties and resistance to digestion in the small intestine, allowing fermentation by beneficial gut bacteria in the colon. The molecular formula of isomaltohexose is C36H62O31, with a molecular weight of approximately 990.9 g/mol.
Its structural configuration contributes to its stability and functionality as a soluble dietary fiber widely used in food and supplement industries to promote digestive health. Isomaltohexose supports the growth of probiotic bacteria such as bifidobacteria, helping maintain a balanced gut microbiota. The presence of α-1,6 glycosidic bonds makes it less digestible by human enzymes compared to linear maltodextrins, which explains its pronounced prebiotic effects.
Sources and Applications
Isomaltohexose is typically produced through enzymatic conversion of starch, involving enzymes such as dextranase or transglucosylation catalysts derived from specific bacterial strains. It is commonly incorporated into functional foods and nutritional supplements designed to enhance gut health, support the immune system, and provide a source of non-digestible carbohydrates beneficial to intestinal microbiota.
