High-protein beverages
MPC and MPI can provide a protein boost necessary to meet nutrient content claims, such as “excellent” or “good sources of protein,” as well as providing milky flavor and opacity to products. MPCs are typically used in neutral pH beverages but in combination with certain stabilizer system, can easily be used to fortify protein in smoothies and cultured beverages. The caseins in MPCs tend to precipitate near isoelectric point of casein (pH 4.6) or the protein will become extremely viscous, particularly if the product is to be stored for a long time. Manufacturers have been able to overcome some of the above challenges with use of certain polysaccharides, such as pectin, cellulose gum, and processing steps, such as homogenization to achieve a stable suspension (Jurlina 2014). Current research continues to develop lower-viscosity systems, and often combinations with WPCs provide the needed protein and mineral nutritional requirement and shelf-life requirements.