Centre National De La Recherche Scientifique

Technische Universitaet Dresden

Institut National Des Sciences Appliquees De Toulouse

Institut National Recherche Pour L'agriculture, L'alimentation Et L'environement

Thomas Walther

Christof Zeeb

Andre Wagenfuehr

Stephanie Stange

Hubertus Delenk

Cléa Lachaux

Susanne Steudler

Jean-Marie Francois

The invention relates to a method for the biotechnological production of the blue-green fungus pigment xylindein from fungus biomass in a bioreactor, the reactor contents being inoculated with biomass that is uncoloured. The invention also relates to the use of uncoloured biomass of the fungus culturesp. for inoculation in the biotechnological production of the blue-green fungus pigment xylindein.

Method for the biotechnological production of the blue-green fungus pigment xylindein

The present invention relates to a recombinant microorganism which exhibits i) a conversion activity from D-ribulose-5-phosphate into D-arabinose-5-phosphate, increased in comparison with the same, non-modified microorganism; ii) a cleavage catalysis activity from D-arabinose-5-phosphate into D-glyceraldehyde-3-phosphate and glycolaldehyde, increased in comparison with the same, non-modified microorganism; iii) an oxidation activity from glycolaldehyde into glycolate, increased in comparison with the same, non-modified microorganism; and iv) an oxidation activity from glyceraldehyde-3-phosphate into 1,3-bisphosphoglycerate, decreased in comparison with the same, non-modified microorganism. The present invention also relates to a process for preparing glycolic acid from pentoses and/or hexoses, using such a recombinant microorganism. The present invention also relates to a process for producing glycolic acid involving a biomass production phase and a bioconversion phase from hexoses and/or pentoses into glycolic acid.

Microorganisms and process for producing glycolic acid from pentoses and hexoses

Growing community of inventors

Dresden, Germany

Thomas Walther