Sud-chemie Ag

Hermann Friese

Hans Buckl

Bernd Brenner

A method for the preparation of xylose solutions from oat husks which comprises:

Method for the preparation of xylose solutions

A process for the hydrolysis of oat husks is carried out with alkali metal hydroxide or alkali metal chlorite in a first stage and with mineral acid in a second stage to provide D-(+)-xylose. The xylose can be recovered as such, or converted in situ to xylitol. The solid residue by-product of the aforesaid process for the hydrolysis of oat husks, following removal of the lignin content thereof, is readily convertible to cellulose.

Hydrolysis of oat husks

A process for the hydrolysis of deciduous wood wherein the hydrolysis is carried out in a first stage with an alkali metal hydroxide solution of concentration less than 4 percent by weight and in a second stage with mineral acid. A resulting product, D-(+)-xylose, can be recovered as such or converted directly to xylitol. The process also provides for the convenient recovery of lignin and cellulose present in the wood.

Growing community of inventors

Berlin, Germany

Hermann Friese