Casein is a kind of protein polymers generated when milk meets acids. Casein makes up about 80% of the proteins in cow milk and 3% of the total quality. It is main composition of cheese. Dry casein is a kind of insipid unformed powder in white or light yellow.It is soluble in lye and acid fluid but insoluble in water. The products can be widely used as food additive, casein adhesive, watercolor, papermaking, textile and leather. Its derivative can be used in plastic products such as clothing button and other small plastic products through reacting with formaldehyde.
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