Effects of electrochemical treatment and Epigallocatechin-3-gallate on emulsification, rheological and oxidation stability of soybean oil body

Abstract

In this study, the soybean oil body (SOB) was placed in the cathode chamber of an electrochemical reactor, H+ enters the cathode chamber through the proton exchange membrane to undergo reduction reaction. The complex of SOB and Epigallocatechin-3-gallate (EGCG) was prepared on the basis of electrochemical treatment (ESOB-EGCG). The effects of two treatment on the structure and thermal properties of SOB protein were analyzed, which provided a basis for the study on the emulsification, rheological and oxidation stability of SOB emulsion. The results showed that the EAI of ESOB-EGCG was 108% higher than that of SOB, and the emulsion showed greater viscosity and the largest linear viscoelastic region. Through the determination of oxidation stability and fitting of oxidation kinetic model, it was found that ESOB-EGCG sample showed the best oxidation stability, which provided support for fitting and predicting the oxidation stability of SOB.