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Acetone/water oxidation of corn stover for the production of bioethanol and prebiotic oligosaccharides
Industrial Biotechnology & Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens.
Industrial Biotechnology & Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens.
Industrial Biotechnology & Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens.
Industrial Biotechnology & Biocatalysis Group, Biotechnology Laboratory, School of Chemical Engineering, National Technical University of Athens.
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2018 (Engelska)Ingår i: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 270, s. 208-215Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Ethanol production at high-gravity promise to achieve concentrations over the threshold for an economical distillation process and concurrently reduce water consumption. However, a persisting limitation is the poor mass transfer conditions resulting in low ethanol yields and concentrations. Hereby, the combination of an acetone/water oxidation pretreatment process (AWO) with a liquefaction/saccharification step, using a free-fall mixer, before simultaneous saccharification and fermentation (SSF) can realize ethanol concentrations of up to ca. 74 g/L at a solids content of 20 wt.%. The free-fall mixer achieved a biomass slurry’s viscosity reduction by 87 % after only 2 h of enzymatic saccharification, indicating the efficiency of the mixing system. Furthermore, the direct enzymatic treatment of AWO pretreated corn stover (CS) by a GH11 recombinant xylanase, led to the production of xylooligosaccharides (XOS) with prebiotic potential and the removal of insoluble fibers of hemicellulose improved the glucose release of AWOCS by 22 %.

Ort, förlag, år, upplaga, sidor
Elsevier, 2018. Vol. 270, s. 208-215
Nationell ämneskategori
Bioprocessteknik
Forskningsämne
Biokemisk processteknik
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URN: urn:nbn:se:ltu:diva-70763DOI: 10.1016/j.biortech.2018.09.018ISI: 000447384200025PubMedID: 30218937Scopus ID: 2-s2.0-85053040053OAI: oai:DiVA.org:ltu-70763DiVA, id: diva2:1245308
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Validerad;2018;Nivå 2;2018-09-18 (svasva)

Tillgänglig från: 2018-09-05 Skapad: 2018-09-05 Senast uppdaterad: 2018-11-01Bibliografiskt granskad

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Topakas, Evangelos

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