Multiple Regression Analysis for Optimization of Inulin Production from Chicory Roots

Inulin is a polysaccharide of fructose produced from various plant sources and has wide applications in food industries. The present work aims to perform multiple regression analysis for optimization of inulin yield generated from the roots of chicory. Chicory roots were used to extract the main compound inulin using water as the extractant. Multiple regression analysis was carried out by investigating 3 independent variables, Volume of solvent (15-75 mL), time of extraction (10-30 min), and temperature of extraction (30-90 °C). From the analysis, a maximum inulin yield of 1.91% at optimum volume of solvent, extraction time and temperature of 50 mL, 20.5 min and 90 °C, respectively. Hence, multiple regression analysis could be effectively used to maximize inulin yield from chicory roots.