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    • 8. 发明申请
    • FILTRATION
    • 过滤
    • WO1996000237A1
    • 1996-01-04
    • PCT/SE1995000777
    • 1995-06-22
    • PHARMACIA ABWINGE, Stefan
    • PHARMACIA AB
    • C07K01/34
    • C12N9/644C07K1/34C07K14/4717C07K14/755C07K14/76C07K14/8128C12Y304/21022
    • The present invention relates to a method of virus-filtering a solution that contains at least one macromolecule, by virtue of the total salt content of the solution lying in the range of from about 0.2 M up to saturation of the solution with the salt concerned. The inventive method reduces the residence time and the extent to which the solution need to be diluted, and optimizes the yield when virus-filtering primarily proteins, polysaccharides and polypeptides. The reduction in virus content is at least as good as with conventional techniques where the total salt content is low. The present invention facilitates virus filtration with the aid of the so-called "dead-end" technique, which affords several process and economic advantages in comparison with the tangential virus-filtering technique normally used. When virus-filtering the plasma protein factor IX, the yield obtained in the virus-filtering stage is increased from about 70 % to above 95 %, by raising the salt content of the solution in accordance with the present invention.
    • 本发明涉及一种通过溶液的总盐含量在约0.2M至相对于所述盐的溶液饱和度范围内的方法来对包含至少一个大分子的溶液进行病毒过滤。 本发明的方法减少了停留时间以及溶液需要稀释的程度,并且在病毒主要过滤蛋白质,多糖和多肽时优化产率。 病毒含量的降低至少与总盐含量低的常规技术一样好。 本发明借助于所谓的“死端”技术便于病毒过滤,与通常使用的切向病毒过滤技术相比,其提供了几个过程和经济优点。 当对血浆蛋白因子IX进行病毒过滤时,通过提高根据本发明的溶液的盐含量,病毒过滤阶段中获得的产量从约70%提高到95%以上。