Inulin is a reserve polysaccharide in plants, mainly originated from plants, and more than 36,000 kinds have been found, including 11 families such as Asteraceae, Eryngium and Gentianaceae in dicotyledonous plants and Liliaceae and Gramineae in monocotyledonous plants. For example, inulin is abundant in the tubers of inulin, chicory, the tubers of geranium peony (dahlia), and the roots of artichoke, of which the inulin content of inulin in inulin is the highest.