Annikki Gmbh

Karin Fackler

Ortwin Ertl

Kurt Messner

Thomas Ters

Ewald Srebotnik

Chularat Krongtaew

A process for the production of carbohydrate cleavage products, characterized by a combination of the measures that a lignocellulosic material is treated with an aqueous solution containing an alcohol, in particular a C-alcohol or a phenol, and having a pH-value of between 11.0 and 14.0 in order to cleave lignocellulose and separate cleavage products from the material, whereby a material enriched with cellulose and hemicellulose is obtained, and the obtained material enriched with cellulose and hemicellulose is treated with at least one carbohydrate-cleaving enzyme in order to obtain the carbohydrate cleavage products.

Process for the production of carbohydrate cleavage products from a lingnocellulosic material

A method for the preparation of lignin from lignocellulosic material by pulping with alcohol, in particular with a Calcohol, water and a base, in particular NaOH, at a temperature below 100&#xb0; C., in particular from 40&#xb0; C. to 90&#xb0; C., in particular from 50&#xb0; C. to 70&#xb0; C., characterized in that 3 to 12 parts of base, in particular 4 to 10 parts of base, in particular preferable 5 to 8 parts of base, are used per 100 parts of the dry lignocellulosic material to be pulped.

Preparation of lignin

A method for producing lignin derivatives from technical lignins by treatment with proteolytic enzymes (proteases), characterized in that the proteolytic treatment of the technical lignins significantly reduces the molar mass thereof.

Method for producing lignin derivatives

A method of obtaining an aqueous solution of an alkali acetate from lignocellulose, wherein lignocellulose is treated with a first aqueous extraction solution having a pH value in the range of 12 to 14 and a content of a Calcohol, in particular ethanol or isopropanol, in the range of 40% to 90%, in particular of from 75% to 85%, whereby a first aqueous solution of an alkali acetate is obtained, and wherein said first solution of an alkali acetate is used to treat additional lignocellulose in order to enrich additional acetate in said first solution.

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Vienna, Austria

Karin Fackler