ABSTRACT
A fructan is any compound where one or more fructosyl-fructose linkages constitutes a majority of linkages.
Even though according to classical rule, names of molecules ending with “an” should be used to designate polymers with DP > 10, no longer is there today a distinction between polymers and oligomers. Consequently, fructan is used to name molecules that have a majority of fructose residues whatever the number is. It even includes the disaccharide composed exclusively of two fructose residues, specifically the fructosyl-fructose or inulobiose but not sucrose, isomaltulose, and galactosucrose, etc.
