Fructo-oligosaccharide DP7/GF6 belongs to fructooligosaccharides (FOS) with degree of polymerization (DP=7). Fructo-oligosaccharides (FOS) are composed of 6 fructose units linked by (2→1)-β-glycosidic bonds and having a single D-glucosyl unit at the non-reducing end.