Cloud-point extraction of enzymes and polypeptides from a fermentation broth using a non-ionic surfactant
    11.
    发明授权
    Cloud-point extraction of enzymes and polypeptides from a fermentation broth using a non-ionic surfactant 失效
    使用非离子表面活性剂从发酵液中提取酶和多肽的酶

    公开(公告)号:US07019120B2

    公开(公告)日:2006-03-28

    申请号:US10734431

    申请日:2003-12-12

    IPC分类号: C07K1/14

    摘要: A method of extracting a polypeptide of interest from a fermentation broth comprising: i) adjusting the pH close to pI of the polypeptide of interest; ii) adding a non-ionic surfactant with a hydrophile-lipophile balance (HLB) of 12 or lower; iii) cooling the mixture for solubilization and incubating at above cloud point for extraction; iv) phase separating at below cloud point to obtain liquid-liquid-solid fractions; and v) recovering the surfactant-rich top phase containing the polypeptide of interest.

    摘要翻译: 一种从发酵液中提取目的多肽的方法,包括:i)调节pH值接近目的多肽的pI; ii)加入亲水亲油平衡(HLB)为12或更低的非离子表面活性剂; iii)冷却该混合物以溶解并在上述浊点温育以提取; iv)在低于浊点的相分离以获得液 - 液 - 固分数; 和v)回收含有目标多肽的富含表面活性剂的顶相。