| 摘要 |
1,273,498. Xylose and xylitol. F. HOFFMANN-LA ROCHE & CO. A.G. 1 Oct., 1970 [2 Oct., 1969], No. 46712/70. Heading C2C. Xylose and xylitol are prepared from ligninfree hemicellulosic material in which the polysaccharides have been converted to monosaccharides by fermentation in an aqueous medium with a ferment which is inert to pentases, passing the product through a cationic and then an anionic ion exchange resin to give a xylose solution, and, if desired, reducing the latter to xylitol.
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