What Naturally Has Casein? Exploring Dairy and Beyond
                                
                                
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                                    4 min read                                
                            
                                Casein is a naturally occurring phosphoprotein family, and roughly 80% of the total protein content in cow's milk is composed of casein. This protein is found in the milk of all mammals and is responsible for many of the functional and nutritional properties of dairy products like cheese and yogurt.