Physicochemical properties, in-vitro binding capacities for lard, cholesterol, bile acids and assessment of prebiotic potential of dietary fiber from cassava pulp

Cassava pulp is a high value by-product for dietary fiber production. Water-insoluble dietary fiber from cassava pulp (CDF) contained 79.03% (w/w) of neutral detergent fiber (NDFcellulose, hemicellulose, lignin) and a high content of cellulose at 58.55% (w/w). Physicochemical properties of the CDF were studied. Moreover, the CDF was evaluated for its in vitro binding capacities for lard, cholesterol and bile acids: cholic acid (CA)deoxycholic acid (DCA)and taurocholic acid (TA) which were correlated to cholesterol-lowering properties. The digestive stability of CDF was 87.98%. The CDF showed a higher binding capacity for lard, cholesterol and bile acids compared to commercial cellulose. Binding with CA, DCA and TA were 38.50%, 42.71% and 40.84%, respectively. The CDF showed prebiotic activity for Lactobacillus plantarum TISTR 1465, which was higher than commercial cellulose, but lower than some soluble dietary fibers (Inulin, Lactulose and Fructooligosaccharide)