Wintershall Holding Gmbh

Basf Se Corporation

Julia Kristiane Schmidt

Rajan Hollmann

Mari Granström

Oskar Zelder

Hartwig Schröder

Hartwig Voss

Stefan Haefner

Stephan Freyer

Andrea Herold

Christian Fleck

Beata Brockmann

Tillmann Faust

Alois Kindler

Hartwig Voβ

Benjamin Wenzke

Jörg Therre

Tobias Käppler

Bernd Leonhardt

Florian Lehr

Sebastian Briechle

Foppe Visser

Joerg Therre

Tobias Kappler

Tobias Kaeppler

Hartwig SCHRÖDER

Mari GRANSTRÖM

The present invention relates to genetically modified microorganisms capable of producing beta-glucans, characterized in that the genetically modified microorganism overexpresses (i) a polynucleotide encoding a polypeptide having 1,3-&#x3b2;-D-glucan synthase-activity, and/or (ii) a polypeptide having 1,3-&#x3b2;-D-glucan synthase-activity, compared to a corresponding non-modified control microorganism of the same strain. The present invention also relates to the use of a polynucleotide encoding a polypeptide having 1,3-&#x3b2;-D-glucan synthase-activity or the use of such a polypeptide for producing &#x3b2;-glucans. Furthermore, the present invention relates to methods for producing &#x3b2;-glucans comprising the introduction of a promoter upstream of a polynucleotide encoding a polypeptide having 1,3-&#x3b2;-D-glucan synthase-activity thereby increasing the expression of the polynucleotide, or a polynucleotide encoding a polypeptide having 1,3-&#x3b2;-D-glucan synthase-activity into a microorganism being able to synthesize &#x3b2;-glucans.

Genetically modified microorganisms capable of producing &#x3b2;-glucans and methods for producing &#x3b2;-glucans

Genetically modified microorganisms capable of producing beta-glucans and methods for producing beta-glucans

A two-stage process for mineral oil production from mineral oil deposits with a deposit temperature of more than 70&#xb0; C. and a salinity of 20 000 ppm to 350 000 ppm, in which an aqueous formulation comprising at least one glucan with a &#x3b2;-1,3-glycosidically linked main chain, and side groups &#x3b2;-1,6-glycosidically bonded thereto and having a weight-average molecular weight Mof 1.5*10to 25*10g/mol, are injected into a mineral oil deposit through at least one injection borehole and crude oil is withdrawn from the deposit through at least one production borehole. The aqueous formulation is prepared in two stages, by first preparing an aqueous concentrate of the glucan, and diluting the concentrate on site with water to the use concentration.

Process for mineral oil production from mineral oil deposits with high deposit temperature

The present invention is directed to a method for coating a sheet-like cellulose containing material by applying a composition comprising at least one glucan (G), which has a &#x3b2;(beta)-1,3-glycosidically linked main chain and at least one side group having a &#x3b2;(beta)-1,6-glycosidic bond to the main chain, particularly Schizophyllan, and at least one solvent (S), particularly a ionic liquid, on the surface of the sheet-like material.

Method for the coating of a cellulose material by using a glucan

A process for the preparation of aqueous solutions of glucans having a &#x3b2;-1,3-glycosidically-linked main chain and side groups having a &#x3b2;-1,6-glycosidic bond by fermentation of fungal strains. The fungal strains secrete the glucans into the fermentation broth, in an aqueous culture medium, and the separation of the glucans from the fermentation broth is effected using asymmetrical filter membranes.

Process for the preparation of homopolysaccharides

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Heidelberg, Germany

Julia Kristiane Schmidt