Bovine serum albumin, alpha-lactoalbumin and beta-lactoglobulin partitioning in polyethylene glycol/maltodextrin aqueous-two-phase systems

The polysaccharide maltodextrin (MD) can provide a low cost alternative to substitute the fractioned dextran for the use with polyethylene glycol (PEG) in aqueous two-phase, two-polymers systems. In this work we have studied the partitioning of Bovine Serum Albumin (BSA), alpha-Lactoalbumin (beta-La) and beta-Lactoglobulin (beta-Lg) in PEG/MD aqueous two-phase systems. The experiments were performed at local atmospheric pressure (727 mmHg) and 25°C. The influence of the polymers molecular weights and tie-line length were investigated