Protein helps in building muscles and maintaining the ideal weight. Liquid Egg whites are an excellent source of protein, with 3.6 g of protein per 17-calorie egg white. That’s about 5 percent of your daily protein needs. Liquid egg white contains almost identical amounts of spotassium and sodium, minerals that work together to create an essential electrochemical gradient known as the membrane potential. The membrane potential is critical for muscle contraction, nerve impulse transmission, heart function, and transferring nutrients and metabolites throughout cells. Maintaining these membrane potentials accounts for 20-40percent of the resting energy expenditure of a typical adult.