A purification method for extracting antibodies from protein mixtures produced in biological antibiotics, including an ion exchange chromatography method, and an operation unit can be used for the above method.

摘要

The present invention relates to a method for the purification of antibodies from a protein mixture produced in a bioreactor, at least comprising the steps of intermediate purification and polishing, wherein the intermediate and polishing step comprises in-line anion exchange chromatography (AEX) treatment and mixed mode chromatography (MiMo) treatment in flow through mode. The present invention further relates to a single operational unit comprising both an anion exchange chromatography part and a mixed mode chromatography part, which are serially connected, wherein the unit comprises an inlet at the upstream end of the anion exchange chromatography part and an outlet at the downstream end of the mixed mode chromatography part and wherein the unit also comprises an inlet between the anion exchange chromatography part and the mixed mode chromatography part.