High internal phase emulsion stabilized by sodium caseinate:quercetin complex as antioxidant emulsifier

Author(s)

Santos, Matheus A. S. ; Fonseca, Larissa R. ; Okuro, Paula K. ; Cunha, Rosiane L.

• Document type: Journal article
• Source: Food Research International; v. 173, p. 11-pg., 2023-11-01.

Abstract

High internal phase emulsion (HIPE) was produced and stabilized using a novel antioxidant emulsifier formed by the complexation between sodium caseinate (SC) and quercetin (Q). Colloidal complexes, produced via an alkaline process, showed great ability to reduce the interfacial tension between oil-water phases, promoting stabilization of the HIPEs even at low concentrations (1.5% w/v in the aqueous fraction). HIPEs at 0.80 volume fraction of dispersed phase presented remarkable viscosity due to the high-packing network of oil droplets surrounded by a thin liquid layer. Moreover, the emulsions showed a gel-like behavior and kinetic stability for 45-days at 25 degrees C. The approach of SC:Q complexes on HIPEs development is promising to reduce lipid oxidation, translated by the formation of hydroperoxides and malondialdehyde during storage, especially for the complex formed with the highest amount of the phenolic compound. In this study, the development of HIPEs with outstanding kinetic and oxidative stability is reported as a potential alternative for the development of healthier products with reduced saturated and trans-fat content. (AU)

• FAPESP's process: 18/20308-3 - Designing oil structured colloidal systems towards enhanced bioavailability of bioactive compounds on in vitro digestibility behavior
• Grantee: Paula Kiyomi Okuro
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 19/26046-3 - Investigation of high internal phase emulsions-HIPEs as strategy design to tailor in vitro lipid digestion and bioaccessibility of bioactive compound
• Grantee: Paula Kiyomi Okuro
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• FAPESP's process: 19/27354-3 - Architecture of colloidal delivery systems: what is the role of structure on the digestibility?
• Grantee: Rosiane Lopes da Cunha
• Support Opportunities: Research Projects - Thematic Grants