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dc.contributor.authorBawn, M-
dc.contributor.authorBennett, C-
dc.contributor.authorPenumathsa, B-
dc.contributor.authorSubrizi, F-
dc.contributor.authorSuhaili, N-
dc.contributor.authorWard, D-
dc.contributor.authorBourdin, S-
dc.contributor.authorDalby, PA-
dc.contributor.authorHailes, H-
dc.contributor.authorHewitson, P-
dc.contributor.authorIgnatova, S-
dc.contributor.authorKontoravdi, C-
dc.contributor.authorLeak, DJ-
dc.contributor.authorShah, N-
dc.contributor.authorSheppard, T-
dc.contributor.authorWard, JM-
dc.contributor.authorLye, GJ-
dc.identifier.citationFaraday Discuss., 2017en_US
dc.description.abstractOver 8 million tonnes of sugar beet are grown annually in the UK. Sugar beet pulp (SBP) is the main by-product of sugar beet processing which is currently dried and sold as a low value animal feed. SBP is a rich source of carbohydrates, mainly in the form of cellulose and pectin, including D-glucose (Glu), L-arabinose (Ara) and D-galacturonic acid (GalAc). This work describes the technical feasibility of an integrated biorefinery concept for fractionation of SBP and conversion of these monosaccharides into value-added products. SBP fractionation is initially carried out by steam explosion under mild conditions to yield soluble pectin and insoluble cellulose fractions. The cellulose is readily hydrolysed by cellulases to release Glu that can then be fermented by a commercial Yeast strain to produce bioethanol with a high yield. The pectin fraction can be either fully hydrolysed, using physico-chemical methods, or selectively hydrolysed, using cloned arabinases and galacturonases, to yield Ara-rich and GalAc-rich streams. These monomers can be separated using either Centrifugal Partition Chromatography (CPC) or ultrafiltration into streams suitable for subsequent enzymatic upgrading. Building on our previous experience with transketolase (TK) and transaminase (TAm) enzymes, the conversion of Ara and GalAc into higher value products was explored. In particular the conversion of Ara into L-gluco-heptulose (GluHep), that has potential therapeutic applications in hypoglycaemia and cancer, using a mutant TK is described. Preliminary studies with TAm also suggest GluHep can be selectively aminated to the corresponding chiral aminopolyol. Current work is addressing upgrading of the remaining SBP monomer, GalAc, and modelling of the biorefinery concept to enable economic and Life Cycle Analysis (LCA).en_US
dc.subjectsugar beet pulpen_US
dc.subjectsteam explosionen_US
dc.titleAn Integrated Biorefinery Concept for Conversion of Sugar Beet Pulp into Value-added Chemicals and Pharmaceutical Intermediatesen_US
dc.relation.isPartOfFaraday Discuss.-
pubs.notescrosscheck: This document is CrossCheck deposited copyright_licence: The Royal Society of Chemistry has an exclusive publication licence for this journal copyright_licence: This article is freely available. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence (CC BY 3.0) history: Received 7 March 2017; Accepted 30 March 2017; Accepted Manuscript published 26 April 2017-
Appears in Collections:Dept of Mechanical and Aerospace Engineering Research Papers

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