Article (Scientific journals)
Effect of steam explosion treatment on chemical composition and characteristic of organosolv fescue lignin
Maniet, Guillaume; Schmetz, Quentin; Jacquet, Nicolas et al.
2017In Industrial Crops and Products, 99, p. 79-85
Peer Reviewed verified by ORBi
 

Files


Full Text
1-s2.0-S0926669017300122-main.pdf
Publisher postprint (1.08 MB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
Lignin; steam explosion; organosolv; Biorefining
Abstract :
[en] Tall fescue, a grass currently grown as forage, presents a good potential as a feedstock in the developmentof biorefining. In this study, combination of steam explosion and an acetic/formic acid “organosolv”pretreatments are applied on raw fescue to optimize lignin extraction yields and obtain specific products.In a first step, fescue is pretreated by steam explosion under severity factors from 1.4 to 4.2. Thesetreatments allow hemicelluloses solubilization and open the lignocellulosic structure. Steam explodedsolid residues are then treated with an acetic acid (50%)/formic acid (30%)/water (20%) mixture. Extractedlignins are precipitated and characterized by size exclusion chromatography (SEC),31P NMR and HSQCNMR. Results show that acetic and formic acids extracted lignins present G, H and S units with ferulate andp-coumarate. Lignin typical linkages identified are of -O-4 and spirodienone substructures. Combinationof steam explosion and acetic and formic acid pretreatments increases extraction yields from 30% to100%. Moreover, an increase of the steam explosion treatment intensity induces chemical modificationsin lignin structure such -O-4 and spirodienone substructure degradations, increase of free COOH andphenolic OH bonds, decrease of aliphatic OH ferulate and p-coumarate bonds and changes in G/H/S unitsproportions. Steam explosion intensity affects also lignin molecular weights.
Disciplines :
Life sciences: Multidisciplinary, general & others
Author, co-author :
Maniet, Guillaume ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie biologique industrielle
Schmetz, Quentin ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie biologique industrielle
Jacquet, Nicolas  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie biologique industrielle
Temmerman, Michael;  Walloon Agricultural Research Center
Gofflot, Sébastien;  Walloon Agricultural Research Center
Richel, Aurore  ;  Université de Liège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > Chimie biologique industrielle
Language :
English
Title :
Effect of steam explosion treatment on chemical composition and characteristic of organosolv fescue lignin
Publication date :
2017
Journal title :
Industrial Crops and Products
ISSN :
0926-6690
eISSN :
1872-633X
Publisher :
Elsevier
Volume :
99
Pages :
79-85
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
ERABLE Program
Available on ORBi :
since 13 February 2017

Statistics


Number of views
146 (23 by ULiège)
Number of downloads
11 (11 by ULiège)

Scopus citations®
 
40
Scopus citations®
without self-citations
36
OpenCitations
 
30

Bibliography


Similar publications



Contact ORBi