Projektierung Chemische Verfahrenstechnik Gmbh

Bau- Und Forschungsgesellschaft Thermoform Ag

Jurgen Puls

Hans-Hermann Dietrichs

Michael Sinner

Karl-Heinz Brachthauser

Werner Schweers

A process for the production of sugars, and optionally cellulose and lignin, from lignocellulosic vegetable materials which comprises subjecting the vegetable materials to a chemical pretreatment with a mixture of water and lower aliphatic alcohols and/or ketones at a temperature from 100.degree. to 190.degree. C. for a period of from 4 hours to 2 minutes with control of the breakdown of the hemicellulose components followed by separation of residue and a subsequent main chemical treatment with a similar solvent mixture at elevated temperatures for a further period of from 6 hours to 2 minutes.

Process for production of xylitol from lignocellulosic raw materials

Process for production of sugars and optionally cellulose and lignin

A process for the production of xylose by enzymatic hydrolysis of xylan wherein an aqueous solution containing xylan is treated with a carrier having bonded thereto xylanase enzyme and a carrier having bonded thereto .beta.-xylosidase and, optionally, uronic acid-splitting enzyme.

Process for the production of xylose by enzymatic hydrolysis of xylan

Growing community of inventors

Pinneberg, Germany

Jurgen Puls