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Hydrothermal Pretreatment of Date Palm (Phoenix dactyliferaL.) Leaflets and Rachis to Enhance Enzymatic Digestibility and Bioethanol Potential

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Fang, Chuanji [Institute Center for Energy (iEnergy), Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, UAE] Schmidt, Jens Ejbye [Institute Center for Energy (iEnergy), Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, UAE] Cybulska, Iwona [Institute Center for Energy (iEnergy), Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, UAE] Brudecki, Grzegorz P. [Institute Center for Energy (iEnergy), Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, UAE] Frankær, Christian Grundahl [Department of Chemistry, Technical University of Denmark, 2800 Kongens Lyngby, Denmark] Thomsen, Mette Hedegaard [Institute Center for Energy (iEnergy), Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, UAE]

Date palm residues are one of the most promising lignocellulosic biomass for bioethanol production in the Middle East. In this study, leaflets and rachis were subjected to hydrothermal pretreatment to overcome the recalcitrance of the biomass for enzymatic conversion. Evident morphological, structural, and chemical changes were observed by scanning electron microscopy, X-ray diffraction, and infrared spectroscopy after pretreatment. High glucan (>90% for both leaflets and rachis) and xylan (>75% for leaflets and >79% for rachis) recovery were achieved. Under the optimal condition of hydrothermal pretreatment (210°C/10 min) highly digestible (glucan convertibility, 100% to leaflets, 78% to rachis) and fermentable (ethanol yield, 96% to leaflets, 80% to rachis) solid fractions were obtained. Fermentability test of the liquid fractions proved that no considerable inhibitors to Saccharomyces cerevisiae were produced in hydrothermal pretreatment. Given the high sugar recovery, enzymatic digestibility, and ethanol yield, production of bioethanol by hydrothermal pretreatment could be a promising way of valorization of date palm residues in this region.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès libre
Publication date 2015
Language Anglais
Journal information "BioMed Research International" - Vol. 2015, p. 1-13 (2015)
Peer reviewed yes
Publisher Hindawi Publishing Corporation
issn 2314-6133
e-issn 2314-6141
Publication status Publié
Affiliation UCL - SST/ELI/ELIM - Applied Microbiology
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Bibliographic reference Fang, Chuanji ; Schmidt, Jens Ejbye ; Cybulska, Iwona ; Brudecki, Grzegorz P. ; Frankær, Christian Grundahl ; et. al. Hydrothermal Pretreatment of Date Palm (Phoenix dactyliferaL.) Leaflets and Rachis to Enhance Enzymatic Digestibility and Bioethanol Potential. In: BioMed Research International, Vol. 2015, p. 1-13 (2015)
Permanent URL http://hdl.handle.net/2078.1/214967