iMOS® is a mannan oligosaccharide obtained by enzymatic hydrolysis of a konjac glucomannan (KGM). It is a unique prebiotic with a degree of polymerization between 2 and 10. The distinctive feature of enzymatic cleavage is that it specifically exposes the mannose residues. Therefore, the non-reducing ends of iMOS® mannan oligosaccharide are mannoses.