polydextrose also known as dextrose polymer,dextrose is the random polymers of polydextrose, is an dextrose as the major polymer,citric acid as catalyst and sorbitol as plasticizers,formed by thermal polymerization of a water-soluble Polymer.Polydextrose as a new type of Dietary Fiber and thickening agent, expanding agent,addition agent,bulking agent, is widely used in low-energy,high-fiber, Functional Foods etc.