Fructo-oligosaccharide DP9/GF8 belongs to fructooligosaccharides (FOS) with degree of polymerization (DP=9). Fructo-oligosaccharides (FOS) are composed of 8 fructose units linked by (2→1)-β-glycosidic bonds and having a single D-glucosyl unit at the non-reducing end.