Abstract
Data are presented which indicate the feasibility of protein fractionation at high salt concentrations (≤ 3 M NaCl) through differential hydrophobic (non-ionic) adsorption on a series of columns of agaroses substituted with ligands of increasing hydrophobicity. By means of such a hydrophobicity gradient of connected columns, separation of mixtures of γ-globulin and serum albumin, as well as group separation of proteins in dialyzed human blood serum, has been achieved.