Examination of milk proteins from mare's milk by polyacrylamide gel electrophoresis and isoelectric focusing

Abstract

Protein fractions of 16 Hungarian Draught, 4 Haflinger, 6 Breton and 3 Boulonnais mare's milk were determined by polyacrylamide gel electrophoresis and isoelectric focusing. Using these methods genetic variants coidd be identified in both the casein and the whey protein fractions. Based on the differences between the protein fractions of mare's and cow's milk, a method was elaborated to identify cow milk contamination in mare's milk.
Keywords: mare’s milk; cow’s milk; milk protein; polyacrylamide gel eletrophoresis; isoelectric focusing