which are non digestible food ingredients that beneficially affect the host by selectively stimulating the growth and/or activity of bacteria in the colon (Wang, 2009). Inulin is a prebiotic whose degree of polymerization (DP) ranges between 10 and 60. It is extracted from chicory roots and consists of chains of fructose units (Biedrzycka & Bielecka, 2004). Oligofructose is obtained through partial hydrolysis of inulin and therefore has a lower DP, which ranges from 2 to 8 (Franck,2002). A mixture of oligofructose and inulin is known as oligofructoseenriched inulin (Roberfroid, 2007).