Article (Scientific journals)
Thermophilic and cellulolytic consortium isolated from composting plants improves anaerobic digestion of cellulosic biomass: toward a microbial resource management approach
Kinet, Romain; Destain, Jacqueline; Hiligsmann, Serge et al.
2015In Bioresource Technology, 189, p. 138-44
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Keywords :
Microbial communities; Anaerobic digestion; Pyrosequencing
Abstract :
[en] A cellulolytic consortium was isolated from a composting plant in order to boost the initial hydrolysis step encountered in anaerobic digestion. Improvement of the cellulose degradation, as well as biogas production, was observed for the cultures inoculated with the exogenous consortium. Metagenomics analyses pointed out a weak richness (related to the number of OTUs) of the exogenous consortium induced by the selective pressure (cellulose as sole carbon source) met during the initial isolation steps. Main microbial strains determined were strictly anaerobic and belong to the Clostridia class. During cellulose anaerobic degradation, pH drop induced a strong modification of the microbial population. Despite the fact that richness and evenness were very weak, the exogenous consortium was able to adapt and to maintain the cellulolytic degradation potential. This important result point out the fact that simplified microbial communities could be used in order to increase the robustness of mixed cultures involved in environmental biotechnology.
Disciplines :
Biotechnology
Author, co-author :
Kinet, Romain ;  Université de Liège - ULiège > Form. doct. sc. agro. & ingé. biol.
Destain, Jacqueline ;  Université de Liège > Chimie et bio-industries > Bio-industries
Hiligsmann, Serge ;  Université de Liège > Chimie et bio-industries > Bio-industries
Thonart, Philippe ;  Université de Liège > Chimie et bio-industries > Bio-industries
Delhalle, Laurent ;  Université de Liège > Département de sciences des denrées alimentaires (DDA) > Microbiologie des denrées alimentaires
Taminiau, Bernard  ;  Université de Liège > Département de sciences des denrées alimentaires (DDA) > Microbiologie des denrées alimentaires
Daube, Georges  ;  Université de Liège > Département de sciences des denrées alimentaires (DDA) > Microbiologie des denrées alimentaires
Delvigne, Frank  ;  Université de Liège > Chimie et bio-industries > Bio-industries
Language :
English
Title :
Thermophilic and cellulolytic consortium isolated from composting plants improves anaerobic digestion of cellulosic biomass: toward a microbial resource management approach
Publication date :
2015
Journal title :
Bioresource Technology
ISSN :
0960-8524
eISSN :
1873-2976
Publisher :
Elsevier Science
Volume :
189
Pages :
138-44
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture [BE]
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