salts coagulant tend to coagulate 11S fraction, while 7S , 2S, and 15S is coagulated by acids. Molecular weight of 11S fraction is heavier than othes fraction, which is 350.000 of 11S, 186.000-210.000 of 7S, and 18.000-32.000 of 2S fraction. Based on this case,