Design of Salicylate-based Ionic Liquid Aqueous Biphasic Systems for the Extraction of a Synthetic Food Colorant E133
Year: 2026
Type: conference-paper
Abstract: Food colorants play an important role in the food industry; however, their accurate determination, separation, and control are essential to ensure food quality and safety. Brilliant Blue FCF (E133) is a synthetic dye widely used in food products due to itsintense color and high stability. In this study, ionic liquid-based aqueous biphasic systems (ABSs) composed of salicylate-based ionic liquids (ILs) and potassium carbonate (K2CO3) were investigated as alternative extraction platforms for the separation of E133. Initially, phase diagrams were constructed to evaluate the biphasic behavior of the investigated systems and to assess the influence of IL cation structure on phase formation. Subsequently, the extraction performance of selected IL-ABSs toward E133 was evaluated. The tested systems demonstrated excellent extraction efficiency, reaching 99.48% and 99.55%. These findings highlight the potential of salicylate-based IL-ABSs as efficient, tunable, and sustainable platforms for the extraction and separation of food-related compounds.
Institution: Vinča Institute of Nuclear Sciences
Language: English
Subfield: Filtration and Separation
Field: Chemical Engineering
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W7223381594