In the presence of Ca2+, the micellar
assemblies coagulate and polymerize to form a gel or curd
that expels the whey by syneresis,. This process is used in
traditional cheese making, the rate and extent of
coagulation and syneresis increases with the casein
content, calcium content and the acidity of the milk. The
physicochemical properties of the casein micelles play an
important role in many technological treatments other than
the manufacture of cheese (El Hakmaoui, 2008).