Inulin is a type of soluble dietary fiber that exists widely in nature. It is a natural component that can be found is such familiar vegetables as onions, burdock, garlic, and leeks, as well as in chicory and Jerusalem artichokes. Inulin is a general term for oligosaccharides and polysaccharides in which fructose (F) is linked in a straight chain to glucose (G) by B2-1 bonding. The length of the chain (the number if fructose molecules) is not fixed, and various chain lengths exist.

Inulin is a kind of Dietary Fiber,