New hemicellulolytic enzymes for bioethanol production  

Ref ID: 18522

Author:

Ourdia Bouzid,
Marina Nadal,
Pedro M. Coutinho,
Bernard Henrissat,
Ronald P. de Vries

Author address:

Microbiology and Kluyver Centre for Genomics of Industrial Fermentation, Utrecht University, Padualaan 8, 3584
CH Utrecht, The Netherlands,
CBS-KNAW Fungal Biodiversity Centre, Uppsalalaan 8, 3584 CT, Utrecht, The
Netherlands,  
Architectur

Full conference title:

11 th European Conference on Fungal Genetics

Abstract:

Hemicellulolytic enzymes such as endoxylanases from glycosyl hydrolysis family 11 (GH11) and 10 (GH10) have a
major importance in several industrial application such as bioethanol production. They improve the yield of
monosaccharides from plant biomass by depolymerization of hemicellulose. This will expand the set
monosaccharides available for conversion  to bioethanol by yeast.
Most commercially applied fungal endoxylanases are obtained from Aspergillus or Trichoderma species. However,
comparison of fungal genomes identified several species that are much richer in genes encoding these enzymes.
One of them is Podospora anserina, which has a saprobic life style, and is only found in dung of herbivores [1]
A growth profile of P. anserina on various substrates shows a high ability to growth in substrates that are rich in
hemicellulose such as wheat straw and  Arundo donax. Both substrates are commonly used in ethanol production.
Using a combination of comparative genomics and phylogeny new GH10 and 11 enzymes were selected to
increase the efficiency of ethanol production.
 
Reference:
[1] Espagne E, Lespinet O, Malagnac F, Da Silva C, Jaillon O, Porcel BM, Couloux A et al., The genome sequence of
the model ascomycete fungus Podospora anserina. Genome Biol. 2008;9 (5) : R77.

Abstract Number: PR8.24

Conference Year: 2012

Link to conference website: http://www.ecfg.info/images/Abstract_Book_Electronic.pdf

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