The present invention relates to the technical field of
blood product production, and specifically relates to a method for extracting and separating IgM and
coagulation factor VII from
plasma. The method comprises the following steps: after the cold glue
plasma is adjusted in pH value and
conductivity, it is loaded onto a first
anion exchange chromatography column, and then sequentially eluted with a first eluent and a second eluent to obtain a first
ion chromatography product; after the first
ion chromatography product is ultrafiltered, dialyzed, and adjusted in pH value and
conductivity, it is loaded onto a gel
filtration chromatography column, and the flow-through solution corresponding to the first
ultraviolet peak and the flow-through solution corresponding to the third
ultraviolet peak are respectively collected to obtain a first gel
filtration chromatography product containing IgM and a second gel
filtration chromatography product containing
coagulation factor VII. This technical solution can solve the technical problem that the existing preparation process cannot simultaneously purify and enrich IgM and
human coagulation factor VII, and at the same time ensure the product quality, improve the
utilization rate of
plasma raw materials, and has ideal practical application value.