Reference : Physicochemical And Biochemical Characterization Of Non-Biodegradable Cellulose In Mioce...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Life sciences : Multidisciplinary, general & others
http://hdl.handle.net/2268/31638
Physicochemical And Biochemical Characterization Of Non-Biodegradable Cellulose In Miocene Gymnosperm Wood From The Entre-Sambre-Et-Meuse, Southern Belgium
English
Lechien, Valérie [> > > >]
Rodriguez, Christian [> >]
Ongena, MARC mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
Hiligsmann, Serge mailto [Université de Liège > > Biochimie et microbiologie industrielles >]
Rulmont, André mailto [Université de Liège > > Département de chimie (sciences) >]
Thonart, Philippe mailto [Université de Liège > > Gembloux Agro-Bio Tech >]
2006
Organic Geochemistry
ELSEVIER
37
11
1465-1476
Yes (verified by ORBi)
International
0146-6380
Oxford
United Kingdom
[en] fossil wood ; cellulose ; biodegradation
[en] Specimens of Miocene fossil wood from the Entre-Sambre-et-Meuse karsts (southern Belgium) were examined using physicochemical and biochemical techniques in order to understand the reasons for the exceptional preservation of these fossilized remains after 15 million years. Structural and chemical changes were assessed by comparing the structural features of the fossil samples with those of their modern counterpart, Metaseguoia. Solid state C-13 nuclear magnetic resonance (NMR) and microscopic analysis showed good preservation of the cellulose structure in the fossil wood from the Florennes peat deposit. Despite the substantial cellulose fraction available in the fossil tissue, an enzymatic degradation test and a biochemical methane potential assay showed that the fossil cellulose could not be degraded by cellulases and anaerobic microorganisms usually involved in the biodegradation of organic matter. Moreover, the cellulose structure (crystallinity and surface area) seemed to have no effect on cellulose biodegradability in these Miocene fossil wood samples. On the basis of our observations, we suggest that the presence of a modified lignin structure could greatly influence cellulose preservation/biodegradability.
Centre Wallon de biologie Industrielle
Researchers ; Professionals ; Students ; General public
http://hdl.handle.net/2268/31638
also: http://hdl.handle.net/2268/5565
10.1016/j.orggeochem.2006.07.002

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
Lechien et al 2006_Organic geochemistry_Fossil cellulose.pdfAuthor postprint1.25 MBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.