Caseinates produced from the curd which results from skim milk acid coagulation. The protein present in the curd became soluble and functional by neutralization. This neutralization is a dry process achieved by an extrusion-cooking, in an extruder. The dry extract of the final product is close to 94%. Before being packaged, the extruded sodium caseinates are ground to have an adequate size.
Extruded sodium caseinates have high emulsifying and viscosing properties. They are mainly used in delicatessen and coffee creamer.