Abstract
Polyacrylamide gel electrophoretie pat- terns of rennet and fungal rennet Cheddar cheeses proved useful in determining the type of milk coagulant for cheese, and in screen-testing poteutial rennet substitutes. The electrophoretic pattern of cheese varied widely with type of milk coagulant. It is emphasized that the many casein compo- nent variations in cheese may complicate attempts to classify cheese varieties inter- nationally.