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Invasive plants in Western Europe as renewable raw materials for biorefining: the case study of Japanese knotweed
Hospied, Antoine; Schmetz, Quentin; Richel, Aurore
2018255th american chemical society national meeting & exposition. nexus of food, energy & water
 

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Keywords :
Japanese knotweed; biorefining; pretreatment; cellulose; lignin; resveratrol
Abstract :
[en] Abstract: Japanese knotweed (Fallopia japonica) is a non-native invasive freshwater plant commonly found in Western Europe, notably along water bodies. In Belgium, our group works on the identification of valuable option for the valorization of this plant in a biorefining perspective. Japanese knotweed is indeed a complex lignocellulosic plant composed of cellulose (about 35%), lignin (26%), hemicellulose (9%) and others (proteins, inorganics, secondary metabolites, etc.). The rhizome of the plant is also an attractive source of trans-resveratrol, a phenolic compound of great potential for high added value applications for cosmetics or para-pharmaceutics. Japanese knotweed is a complex heterogeneous matrix that requires pretreatment processes to individualize lignin from hemicellulose and cellulose for further valorization schemes. Many types of pretreatment allow such a fractionation, their efficiency depending on the structure and composition of the raw material, but mostly on the desired applications for the separated fractions. Our works have evidenced that a methodology combining solvents mixture and Brönsted acid could be a cost-effective option for the one-step recovery of almost all the valuable compounds found in the Japanese knotweed and for their subsequent valorization for niche markets. This pretreatment methodology was found particularly suited for the extraction of phenolic compounds (in particular resveratrol) in high yields and purity. This contribution highlights the innovative applications of molecules extracted from an invasive plant and the benefits of this strategy in biorefining options. Valorization of secondary metabolites, production of high added value derivatives of lignin and cellulose are herein presented and llustrated.
Research center :
Agronomie, Bioingénierie et Chimie - AgroBioChem
Disciplines :
Chemistry
Author, co-author :
Hospied, Antoine ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > SMARTECH
Schmetz, Quentin ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > SMARTECH
Richel, Aurore  ;  Université de Liège - ULiège > Agronomie, Bio-ingénierie et Chimie (AgroBioChem) > SMARTECH
Language :
English
Title :
Invasive plants in Western Europe as renewable raw materials for biorefining: the case study of Japanese knotweed
Publication date :
March 2018
Event name :
255th american chemical society national meeting & exposition. nexus of food, energy & water
Event organizer :
American chemical society (ACS)
Event place :
Nouvelles-Orléans, United States
Event date :
du 18 mars 2018 au 22 mars 2018
Audience :
International
Name of the research project :
Low carbon footprint materials - BIOMAT 3 ULG
Funders :
FEDER - Fonds Européen de Développement Régional [BE]
Région wallonne [BE]
Available on ORBi :
since 30 March 2018

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