フルクタン

thumb|class=skin-invert-image|right|250px|Structural formula of inulins, linear fructans with a terminal α-D-glucose with 1→2 linkage A fructan is a polymer of fructose molecules. Fructans with a short chain length are known as fructooligosaccharides. Fructans can be found in over 12% of the angiosperms including both monocots and dicots such as agave, artichokes, asparagus, leeks, garlic, onions (including spring onions), yacón, jícama, barley and wheat.