Method for the preparation of xylose solutions

US3990904A · kind A · utility

Assignee

• Sud Chemie, Inc. · US

Inventors

• Hermann Friese
• Hans Buckl · Bad Aibling, DE
• Bernd Brenner · Moosburg an der Isar, DE

Key dates

• Filing date: May 11, 1976
• Grant date: Nov 9, 1976
• Expiry date: May 11, 1996

Classification

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

Abstract

A method for the preparation of xylose solutions from oat husks which comprises: PA1 A. hydrolyzing oat husks with a solution of alkali metal hydroxide to provide oat husks from which the chemically bound acetic acid originally present therein has been substantially completely removed, and a solution of acetic acid, provided, that a quantity of not less than one mole, and not more than two moles, of said solution of alkali metal hydroxide is used per mole of acetic acid originally present in the oat husks; PA1 B. recovering the oat husks from which the chemically bound acetic acid has been substantially removed; and PA1 C. hydrolyzing the oat husks of step (b) with a mineral acid to provide a solid residue containing lignin and an acidic solution of D-(+)-xylose.