Ultracentrifugal and electrophoretic studies on the milk proteins

Abstract

FEW ultracentrifugal studies on milk proteins have been carried out since the ultracentrifuge was constructed by Svedberg.1 In 1924 Svedberg and Fahraeus [v. Svedberg, 1930] estimated the degree of dispersion of calcium caseinogenate in cow's milk and concluded that the Ca caseinogenate formed a very polydisperse suspension in the milk serum, that the distribution curve was very flat and that the diameters of the particles were of the order of magni- tude of 20-140 mu (mu= 10-7 cm.). The experiments were carried out in relatively low centrifugal fields of about 1500 times gravity.