| 摘要 |
PROBLEM TO BE SOLVED: To produce a composition containing a high content of ganglioside while is useful as a material for a variety of foods and drinks, medicines or chemicals. SOLUTION: Ethanol is added to a ganglioside-containing substance, for example, dairy products such as milk, butter milk, butter curd, whey protein concentrate(WPC) so that the concentration becomes 30-70% to recover the fraction containing the precipitate of ganglioside. Then, ethanol is added to this ganglioside-containing fraction so that the concentration becomes 70-90% to remove the precipitate of protein. Preferably, water is added to lower the ethanol concentration to <=30% and the solution is treated with a membrane for ultrafiltration or micro-filtration whereby the objective high content of ganglioside composition is obtained. |
