This paper shows that low concentrations of -lactoglobulin fibrils can induce depletion-flocculation in -lactoglobulin-stabilized oil-in-water emulsions. The minimum required fibril concentration for flocculation was determined experimentally for fibril lengths of about 3 and 0.1 m. The minimum fibril concentration for flocculation is two orders of magnitude higher for the short fibrils than for the long ones. These experimental results correspond well with a theoretical prediction based on a model of spinodal decomposition. In addition, rheological measurements were performed, verifying that flocculation was induced by a depletion mechanism. The results of this study show that the minimum concentration required for depletion-flocculation can be tuned by varying the length of the fibrils.
- dextran sulfate
Blijdenstein, T. B. J., Veerman, C., & van der Linden, E. (2004). Depletion - flocculation in oil-in-water emulsions using fibrillar protein assemblies. Langmuir, 20(12), 4881-4884. https://doi.org/10.1021/la0497447