Fremgangsmåde til at fremstille en sammensætning indeholdende en höj proportion af Gangliosid

摘要

A method of preparing a composition containing a high proportion of Ganglioside which comprises the steps of: (1) adding ethanol to a material containing Ganglioside so as to have a concentration of ethanol of 30 to 70 volume % and recovering the precipitated fraction containing Ganglioside; (2) adding ethanol to the recovered fraction containing Ganglioside so as to have a concentration of ethanol of 70 to 90 volume % and removing the precipitated proteins; and, (3) passing the fraction containing Ganglioside from which the proteins have been removed, through a membrane and recovering the Ganglioside retained on the membrane.