| 摘要 |
PROBLEM TO BE SOLVED: To inexpensively and readily purify erythritol compound for noncariogenic sweeteners, etc., by removing a microbial cell from culture solution of an erythritol-producing microorganism using glucose as a raw material, concentrating the culture solution and separating the produced insoluble substance. SOLUTION: Microbial body is removed from an erythritol-containing culture solution obtained by culture of an erythritol-producing microorganism [e.g. Moniliella Tomentosa Var. Pollinis (CBS461.67)] using glucose as a raw material and erythritol concentration in the culture solution is concentrated to >=20 wt.% and the produced insoluble material is separated from the culture solution to economically and readily purify the objective erythritol hardly generating energy in the human body, having about 75% degree of sweetness based on that of sugar and utilizable for foods, cosmetics, medicines, etc., as a noncariogenic sweetener. Furthermore, when the insoluble substance is separated from the culture solution, a filter having 0.1-10μm pore diameter is preferably used.
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