at 20 °C at 140,000 g for 20 min to make emulsion oil droplets aggregated. After this forcible aggregation process, the milk-based emulsions were separated into cream layer containing oil droplets at to the top, clear water phase in the middle and brown precipitate at the bottom of the tube. The forcibly aggregated oil droplets were redispersed using the contact speaker for 90 min in an incubator at 20 °C according to the procedure which is described above, Section 2.2.2. The brown precipitate was so tightly packed that it scarcely contributed to an increase of turbidity of the water phase in this experiment. The redispersed phase was collected by a syringe as described above. It was then twice diluted and underwent turbidimetric analysis.