Process for the purification of proteins using acidic polysaccharide gels
Patent 4667018 Issued on May 19, 1987. Estimated Expiration Date: 
February 6, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 6, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2161861 2607768 3069327 3252961 3404142 3842062 Process for extracting proteins from milk using silica and anion exchange resins Process of extraction of lactoferrine and immunoglobulins of milk Patent #: 4436658 InventorsAssigneeApplicationNo. 06/826720 filed on 02/06/1986US Classes:530/417, Chromatography or by septum selective as to material, e.g., gel filtration, molecular sieve dialysis, etc.426/656, Protein, amino acid, or yeast containing426/657, From animal435/190, Acting on CHOH group as donor (e.g., glucose oxidase, lactate dehydrogenase (1.1))435/192, Acting on hydrogen peroxide as acceptor (1.11)530/387.1, Immunoglobulin, antibody, or fragment thereof, other than immunoglobulin antibody, or fragment thereof that is conjugated or absorbed530/415, Selective absorbtion, e.g., Ca phosphate sorbents, etc.530/421, Polymeric, e.g., polyethylene glycol, etc.530/832, Milk; colostrum530/833Whey; cheeseExaminersPrimary: Schain, Howard E.Attorney, Agent or FirmInternational ClassesA23J 1/20 (20060101)A23J 1/00 (20060101) Foreign Application Priority Data1985-02-07 BEAbstractA process for the purification of proteins from a fluid medium wherein said proteins have an isoelectric pH higher than the pH of said fluid medium, said process comprising passing the liquid medium over acidic polysaccharide gel particles of at least 0.5 mm in the shortest dimension, and recovering the desired proteins from the gel particles by elution with an aqueous salt solution having ions concentration of at least 5 grams per liter. |
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