ANSWER

Oligofructose is obtained from chicory Inulin. Inulin and oligofructose have a glycemic Index of virtually zero, so they do not significantly contribute to a rise in blood sugar levels. Both inulin and oligofructose are types of fructo-polysaccharides.  (Damodaran et al., 2007; Hui, 2006; Franck, 2005). However, another study showed that the value of the glycemic index for inulin is at one (U.S. Patent No.  20060088637 A1, 2004).

References

Damodaran, S., & Fennema, O. (2008). Fennema’s food chemistry(pp. 149-151). Boca Raton: CRC Press.

Franck, A. (2005). The role of Inulin and Oligofructose in a low-glycaemic diet. Active Food Scientific Monitor, 4-10.

Goldman, F. (2004). Sugar Substitute and Bulking Agent and Chocolate.S. Patent No.  20060088637 A1.

Hui, Y. H. (2006). Handbook of Food Science, Technology and Engineering(pp. 139). Boca Raton: CRC Press.