| 摘要 |
PURPOSE:To stably fractionate an oligosaccharide, having good flavors and hardly suffering from occurrence of browing reaction, etc., from a liquid containing the oligosaccharide and protein, ash in addition to the sugar, by using strong acidic cation exchange resins with crosslinking degree within a specific range. CONSTITUTION:A liquid containing an oligosaccharide, proteins, amino-acid and ashes normally at 2-50% conc. (oligosaccharide concentration is preferably 1-15%) is treated with strongly acidic (preferably sulfonic acid type) cation exchange resins under 3-7pH condition normally at about 0.15-0.55 SV liquid velocity to fractionate the oligosaccharide from other components. As for the liquid containing the oligosaccharide, proteins, etc., a soybean whey, an UF- or RO-treated liquid thereof, a hydrous ethanol extraction liquid of de-fatted soybean, an exudate liquid of soybean, an aqueous medium extraction liquid of soybean such as 'YU' is bean curd production, a hydrolyzate of an enzyme part of manner, agar, guar gum, etc., etc., are utilized.
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