Reaktion #354355

ord-db4ccdb5bf5c4cc6b0eb2abb4b415aa6

Reaktionsgleichung

O=C[C@H](O)[C@@H](O)[C@H](O)CO
xylose
O=C[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO
dextrose
[Na+].[OH-]
NaOH
→
OC[C@H]1O[C@](O)(CO)[C@@H](O)[C@@H]1O
levulose

Edukte

O=C[C@H](O)[C@@H](O)[C@H](O)CO
xylose
O=C[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO
dextrose
[Na+].[OH-]
NaOH

Reagenzien

Keine

Reaktionsbedingungen

Temperatur
58°CELSIUS
Detaillierte Bedingungen
See reaction.notes.procedure_details.

Vorschrift

The above experiment was repeated, except that the xylose isomerase was bound on an alumina carrier. The same dextrose feed liquor, pre-adjusted to a pH of 8.3 - 8.4 with 4 N NaOH, was pumped through the column, which was maintained at a temperature of 58°C, at a rate to provide 45% by weight levulose, dry basis, in the effluent. The residence time was less than one hour. The following is an analysis of the pH of the feed syrup and effluent syrup after a prolonged continuous conversion campaign:

Quelle

DOI: 10.6084/m9.figshare.5104873.v1Patent: US03941655uspto-grants-1976_03