1. Biomass, Bioproducts and Energy Unit, Valorisation of Agricultural Products Department, Walloon Agricultural Research Center (CRA-W), Chaussée de Namur, 146, B-5030 Gembloux, Belgium
2. Bioengineering Group, Earth and Life Institute, Université catholique de Louvain, Croix du Sud, 2 box L7.05.19, B-1348 Louvain-la-Neuve, Belgium