Process for the two-stage decomposition of hemi-celluloses to xylose

US4072538A · kind A · utility

Assignee

• Sud Chemie, Inc. · US

Inventors

• Rudolf Fahn
• Bernd Brenner · Moosburg an der Isar, DE
• Hans Buckl · Bad Aibling, DE

Key dates

• Filing date: Oct 4, 1976
• Grant date: Feb 7, 1978
• Expiry date: Oct 4, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C13K13/002
• WIPO field: Food chemistry
• WIPO sector: Chemistry

Abstract

Process for the two-stage decomposition of hemi-celluloses of xylan-containing natural products for the purpose of obtaining xylose and xylitol where the starting material is treated in the first stage with a basic medium and the obtained solid residue is subjected in a subsequent stage to an acid treatment wherein the alkaline and acid stages are carried out in a single reaction vessel.