[Isolation of transferrin and albumin from Cohn fraction IV of human blood plasma proteins].

To isolate transferrin and additional amounts of albumin the parameters are developed for subfractionating with the alcohol-rivanol method fraction IV (according to Cohn) of plasma proteins (waste of albumin production from plasma of donor blood). The suggested method for fraction IV subfractionating makes it possible to obtain true albumin and transferrin. In all series the yield of wet and dry sediments of transferrin is constant. To remove alcohol from albumin and transferrin half-finished products the regimes of sublimation drying are worked out at which protein is not denaturated. Albumin obtained from fraction IV satisfies all the requirements of MPTY-42 N 3500-67 for the albumin preparation from donor blood. The developed method for subfractioning fraction IV of plasma proteins is easily reproduced on an industrial scale, permits a 8% increase in albumin yield from 1 1 of plasma and a simultaneous obtaining of transferrin which may be a basis for medicinal preparation.