To provide a method for efficiently concentrating the microbial cell of a microorganism such as bacterium, yeast, virus, etc., by a simple process and to obtain a microbial cell concentrating reagent for the method.
A cation and an anion are added to an aqueous medium containing the microbial cell of a microorganism to form a slightly water-soluble substance and the microbial cell of a microorganism is adsorbed on the slightly water-soluble substance. Then, the slightly water-soluble material is recovered and dissolved to give the microbial cell of the microorganism or eluted with a microbial cell eluting agent to give the microbial cell. An oxo-acid ion selected from phosphate ion, silicate ion, carbonate ion, sulfate ion and borate ion can be used as the anion. An alkaline earth metal ion selected from magnesium ion, calcium ion, strontium ion and barium ion can be used as the cation.
KAMISAKA YOSHIHIKO
HORIGOME KAZUMI
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