Toray Industries, Inc.

Shuji Sekiguchi

Kazuhiro Tanahashi

Hiroyuki Sugaya

Ichiro Kumo

Giman Jung

Shigehisa Wada

Nobuyuki Kuroki

Toshihiko Kuroda

Satoko Yamada

The following is disclosed: (1) a membrane fractionator including a filtration section, a concentrating section, a recovery section and a liquid feed pump, wherein a flow channel connecting the filtration section, concentrating section and recovery section to each other constitutes a closed circuitry; (2) a method of biocomponent separation, characterized in that a sample derived from biocomponents is fed into an antibody adsorption membrane separation system having an antibody capable of adsorbing specified protein internally accommodated in the middle or a rear part of a membrane separation system that in the absence of antibodies adsorbing proteins, exhibits a permeation ratio between human alpha1-microglobulin and human albumin of 1.5 to 1000, thereby separating part of the biocomponents; and (3) a method of protein fractionation, comprising bringing a solution containing two or more types of proteins and water into contact with a hollow yarn separation membrane to thereby attain protein fractionation, characterized in that the fractionation solution contains an organic solvent.

Fractionator and method of fractionation

Growing community of inventors

Tokyo, Japan

Shuji Sekiguchi