| 摘要 |
The invention provides crystals of oligosaccharides which are useful as raw materials or intermediates for health foods, drugs, cosmetics and so on; and processes for preparation of the crystals which are suitable for mass or industrial production, that is, a process for preparation of crystals of trisaccharides or higher saccharides, characterized by adding an aqueous solution of a trisaccharide or a higher saccharide to a water-miscible organ ic solvent; a process for preparation of crystals of oligosaccharides, characterized by adding an aqueous solution of an oligosaccharide represente d by the general formula (I) to a water-miscible organic solvent; and crystals of oligosaccharides represented by the general formula (I): (I) wherein Gal is galactose; Glc is glucose; R1 is a monosaccharide or amino sugar residue, or a derivative thereof; R2, R3 and R4 are each independently a monosaccharide or amino sugar residue, a derivative thereof, -X(-Y)- (wherein X and Y are each independently a monosaccharide or amino sugar residue or a derivative thereof), or a single bond; and R5 is hydrogen, a monosaccharide or amino sugar residue, or a derivative thereof.
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