A simple method for the preparation of human serum albumin.
A simple method, based on ethanol fractionation, for the preparation of highly purified human serum albumin with a higher yield than that of the conventional ethanol procedures is described. It consists of two purification steps, namely, precipitation of most of the other plasma proteins from a 3-fold diluted plasma with ethanol at 42% concentration, pH 5.75 and -5 degrees C, leaving over 96% pure albumin in the supernatant, followed by isoelectric precipitation of albumin from the supernatant at pH 4.8 and -5 degrees C. The paste thus obtained was processed to the final albumin solution according to the conventional methods. The yield of the final albumin with a purity of over 99% was equivalent to 29.5 g/l of plasma representing a recovery of over 93%. The possibility of recovering other plasma proteins and the suitability for large scale preparation are also discussed.
D000418:Albumins / Q000302:isolation & purification; D000941:Antigens / Q000302:isolation & purification; D001798:Blood Proteins / Q000302:isolation & purification; D005591:Chemical Fractionation / Q000379:methods; D004591:Electrophoresis, Polyacrylamide Gel; D000431:Ethanol / Q000494:pharmacology; D005612:Freeze Drying; D006801:Humans; D007122:Immunoelectrophoresis; D012709:Serum Albumin / Q000302:isolation & purification*
D000418:Albumins; D000941:Antigens; D001798:Blood Proteins; D012709:Serum Albumin; D000431:Ethanol