Process for the enzymatic hydrolysis of chemically pretreated lignocellulose

摘要

Preparation of sugar containing hydrolyzate (I) from lignocellulose containing materials, comprises: pretreating the materials with a chemical compound comprising sulfuric acid, alkali, peroxydisulfate, preferably potassium- or ammonium peroxydisulfate, potassium peroxide or potassium hydroxide in the presence of water; and separating the aqueous phase and washing the obtained product for enzyme hydrolysis in the presence of water. An independent claim is included for the preparation of desired organic substance with at least 3 carbon atoms or at least 2 carbon atoms and nitrogen atom, comprising fermentation of these substances producing microorganisms, where (I) is useful as a carbon source.