| 摘要 |
Process for manufacture of D-xylose characterized by the fact that: in a first step, syrup of D-xylulose is subjected to an enzymatic isomerization in M3 providing a mixture of D-xylose and D-xylulose, in a second step, the abovesaid mixture is subjected to chromatographic treatment in M4 leading to at least two fractions of which one is highly enriched in D-xylose (fraction X1) et of which the other is highly enriched in D-xylulose (fraction X2), in a third step, the fraction X2 is recycled through a pipe P to M3, the D-xylose being recovered from the fraction X1, the latter can also be subjected directly to a hydrogenation step. |
