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The emulsifying properties of a mixture of Quillaja bark saponin (QBS) and β-lactoglobulin (β-lg) were evaluated under different pH conditions (7–9) and NaCl concentrations (0–200 mmol·L−1) and compared to the individual components. The formation and stabilization of oil-in-water emulsions were evaluated through visual analysis, droplet size distribution, droplet surface electrical charge (ζ-potential),...
The stability of bitumen emulsions was compared with the chemical and interfacial properties of the bitumens. The chemical properties of the bitumens were studied by determining their asphaltenes and resins contents and the interfacial properties by measuring the zeta potential of bitumen dispersions in acid water. The DLVO theory was applied to evaluate the stability of the emulsions. This theory...
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