| abstract |
(57) [Summary] [Purpose] When a fluid containing a protein is filtered through a porous medium, the clogging of the porous medium is prevented in advance. Does not significantly increase the upstream pressure and therefore An object of the present invention is to provide a filtration method capable of extending the time during which effective filtration of a protein-containing fluid is performed. The present invention relates to a protein-containing fluid, for example, A method for filtering milk, beer, wine, etc., which comprises adding citrate ions to the protein-containing fluid before passing the protein-containing fluid through a porous medium, such as a microporous membrane. A method of including. |