Konjac glucomannan (KGM) is a water-soluble dietary fiber that is a high molecular polysaccharide, which consists of Dmannose and D-glucose units at a molar ratio of 1.6:1.0, connected by β(1-4)-glycosidic bonds. Acetyl groups are located on every 9-19th sugar unit. These acetyl groups contribute to the solubility and gelling properties. If the acetyl groups are removed under mild alkaline conditions, the molecule will produce heat stable gels.