Soy milk is a drink obtained from ground soy beans. It contains proteins, plant lipids, essential fatty acids, and oligosaccharides, creating a popular health food. Sometimes used as a substitute for dairy milk, soy milk is classified into plain soy milk processed soy milk, and soy milk drinks. Many dislike plain soy milk due to strong flavor nd aftertaste unique to soy beans. For this reason, taste is adjusted by adding sugar, salt, flavors, or fruit juice to create processed soy milk and soy milk drinks.
We measured and compared particle diameters and the zeta potential of plain soy milk and processed soy milk using the ELSZ-2000, diluting the solutions with distilled water to achieve a 1% concentration of solid soy bean ingredients for measurement.
