The Role of Chicory (Cichorium intybus L.) Root Extract in Functional Food Formulations

Abstract

Chicory (Cichorium intybus L.) roots, which were once employed as a coffee substitute, are now a useful functional ingredient in contemporary food items. This review examines the techno-functional properties, advanced extraction methods, and bioactive profile of chicory root extract, with a specific focus on its use in coffee blends and other food matrices. Chicory roots are particularly rich in inulin-type fructans. Modern purification techniques like ultrafiltration allow the production of extracts with high inulin purity (over 90%). This highly purified prebiotic fiber serves as an excellent substitute for fat and sugar, altering viscosity and improving mouthfeel in various foods, including dairy, bakery, meat, and chocolate products. Creating chicory-coffee blends (e.g., a 40:60 chicory-to-coffee ratio) offers a synergistic combination that reduces caffeine intake and enhances antioxidant capacity. The review also discusses important food safety considerations, such as strategies to reduce acrylamide formation during roasting through divalent cation pretreatments. Nutritionally, prebiotic inulin resists digestion in the upper gastrointestinal tract, reaching the colon where it selectively stimulates beneficial microbiota and produces short-chain fatty acids (SCFAs). Ultimately, given the high dependence on imported inulin, regions with favorable geographical conditions like Türkiye have significant agricultural potential for cultivating industrial chicory to meet the increasing demands of the functional food industry.