Albumin purification
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United States of America Patent
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Oct 5, 1993
Issued Date -
N/A
app pub date -
Feb 27, 1992
filing date -
Oct 5, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
There is provided in accordance with the practice of this invention a process for separating albumin from an impure protein fraction containing albumin. Contaminants, in an aqueous solution of the impure protein fraction containing albumin, are precipitated from the solution at a pH of from about 4.5 to about 4.7. Additional contaminants that remain soluble are bound to an anion-exchange resin. After the precipitated and anion-exchange-bound contaminants are removed from the albumin-containing solution, the pH of the solution is adjusted to from about 4.7 to about 6.1, and additional contaminants are precipitated. Further contaminants are then bound to an anion-exchange resin, and these precipitated and anion-exchange-bound contaminants are removed from the albumin-containing solution.
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