Soyafibe-S is a soluble polysaccharide extracted and refined from soybeans. It has a relatively low viscosity and high stability as an aqueous solution. Under acidic conditions, Soyafibe-S prevents protein particles from cohering and precipitating. It also acts as an emulsifier and stabilizer. In yogurt drinks, addition of just 0.4% Soyafibe-S results in a smooth, creamy beverage.