Inulin, often called by the generic name of oligofructose, is a mixture of ppolysaccharides composed of a chain of fructose units with generally a terminal glucose unit. Inulin of China H&Z® factory is classified as a prebiotic dietary fiber. It is mainly found in chicory roots, Jerusalem artichokes and dahlia tubers. It is a water-soluble dietary fiber, also a natural carbohydrate, almost not be acid hydrolysis and digestion. There are plenty of beneficial microbial fermentation.