| 摘要 |
PCT No. PCT/EP91/02170 Sec. 371 Date May 26, 1993 Sec. 102(e) Date May 26, 1993 PCT Filed Nov. 18, 1991 PCT Pub. No. WO92/09687 PCT Pub. Date Jun. 11, 1992.In a process for separating the exocellular proteins from the micro-organisms of a filtered fermentation liquor, the removal of solid is to be improved while retaining the useful substance. This is achieved by, in a first stage, removing substances preventing protein precipitation with the aid of a solid adsorption agent; concentrating the remaining solution to a protein content of about 30 to 40% by weight; and then precipitating and separating the protein, optionally with the addition of precipitants for protein to accelerate the precipitation, at pH values between 6 and 10.
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