Article (Scientific journals)
Oak barks as raw materials for the extraction of polyphenols for the chemical and pharmaceutical sectors: a regional case study
Dedrie, Maxime; Jacquet, Nicolas; Bombeck, Pierre-Louis et al.
2015In Industrial Crops and Products, 70, p. 316-321
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Keywords :
oak barks; polyphenols; lignin; cellulose; hemicellulose; extractives
Abstract :
[en] Despite their potential for chemical recycling, residues from forest harvesting and wood processing are mostly used for industrial applications with low added value (energy, paper pulp, panels). Bark of both oak species, Quercus robur L. 1753, Quercus petraea (Matt.) Liebl. 1784 is a by-product from sawmill and pulp mill activities. Bark is mainly used as a fuel for the same wood plants. The aim of this study is to look at the feasibility of enhancing the value of this material through the extraction of bioactive molecules such as polyphenols (i.e. catechin, gallic and ellagic acids). First, the effect of industrial storage of logs and bark on their polyphenol content was explored. Then, referring to the selection of tan oaks in the past, the question of an optimum harvesting age is addressed in order to maximize the polyphenol content of the barks. In the end, molecular diversity of bark is examined through the identification of molecules of interest, using different chromatographic analyses. The results show an effect of the industrial context and an effect of the raw material age on the chemical properties of the bark. First investigations also highlight molecules of interest and the molecular diversity, which needs to be further explored.
Disciplines :
Physical, chemical, mathematical & earth Sciences: Multidisciplinary, general & others
Author, co-author :
Dedrie, Maxime
Jacquet, Nicolas  ;  Université de Liège - ULiège > Chimie et bio-industries > Chimie biologique industrielle
Bombeck, Pierre-Louis ;  Université de Liège - ULiège > Chimie et bio-industries > Chimie biologique industrielle
Hebert, Jacques ;  Université de Liège - ULiège > Forêts, Nature et Paysage > Gestion des ressources forestières et des milieux naturels
Richel, Aurore  ;  Université de Liège - ULiège > Chimie et bio-industries > Chimie biologique industrielle
Language :
English
Title :
Oak barks as raw materials for the extraction of polyphenols for the chemical and pharmaceutical sectors: a regional case study
Publication date :
2015
Journal title :
Industrial Crops and Products
ISSN :
0926-6690
eISSN :
1872-633X
Publisher :
Elsevier
Volume :
70
Pages :
316-321
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 01 April 2015

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