Kali-chemie Aktiengesellschaft

Boris Meyer

Dirk Bonse

Guenter Weidenbach

Gunter Weidenbach

Disclosed is a process for the preparation of a solution containing glucose and fructose (isoglucose) by the conversion of a glucose-containing solution on a catalyst having glucose isomerase activity and produced on the basis of a SiO.sub.2 carrier. The productivity of the catalyst may be significantly increased by the addition of SiO.sub.2 to the glucose solution, and the catalyst according to the present invention is not damaged by temporary process shutdowns.

Process for the preparation of isoglucose

When isomerizing part of the glucose content of a glucose-containing solution to fructose, the productivity of glucose isomerase immobilized on an SiO.sub.2 carrier is increased considerably by pre-contacting the glucose-containing solution with particles of SiO.sub.2 or aluminum silicate. An apparatus is used having a reaction vessel containing the immobilized glucose isomerase and a pre-column containing the particles of SiO.sub.2 or aluminum silicate.

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Hanover, Germany

Boris Meyer