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Hydrothermal processing of hardwoods and agro-industrial residues :evaluation of xylo-oligosaccharides production

2009-09-02Conference object Open access
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dc.contributor.authorCarvalheiro, Florbela
dc.contributor.authorFernandes, Talita Silva
dc.contributor.authorDuarte, Luís C.
dc.contributor.authorLopes, Sónia
dc.contributor.authorMoura, Patrícia
dc.contributor.authorPereira, Helena
dc.contributor.authorGírio, Francisco
dc.date.accessioned2010-03-23T11:48:46Z
dc.date.available2010-03-23T11:48:46Z
dc.date.issued2009-09-02
dc.description.abstractAutohydrolysis was used as a pre-treatment method for the selective hydrolysis of hemicelluloses of four lignocellulosic materials: eucalypt wood chips (EWC), corn cobs (CC), wheat straw (WS) and brewery’s spent grain (BSG), and the process was optimized towards the production of xylo-oligosaccharides (XOS). The effects of temperature, both at isothermal (150-190ºC), and non-isothermal (up to 240ºC) conditions, and liquid-to-solid ratio (LSR), 8 or 10 g/g, on the composition of both the liquid and solid phases were studied. The operational conditions leading to the maximal recovery of XOS for each raw material were established and discussed based on the severity factor (log R0). The higher yields obtained were in the range of 43–65% of the feedstock (arabino)xylan, with the highest value attained for CC for log R0 =3.75. Under the optimised conditions for XOS production, glucan was only slightly solubilised, enabling an enrichment of the solid phase (up to 67% of glucan for EWC). Delignification was also not extensive reaching utmost 18%, in the case of CC. cosmetic industries.pt
dc.identifier.citationCarvalheiro, Florbela; Fernandes, Talita Silva; Duarte, Luís C.; Lopes, Sónia; Moura, Patrícia; Pereira, Helena; Gírio Francisco M. Hydrothermal processing of hardwoods and agro-industrial residues :evaluation of xylo-oligosaccharides production. In: Proceedings of the 2nd Wood Nordic Biorefinery Conference, Helsínquia, Finlândia, 2009,September 2-4, vol. 2, p. 96-102pt
dc.identifier.urihttp://hdl.handle.net/10400.9/584
dc.language.isoengpt
dc.titleHydrothermal processing of hardwoods and agro-industrial residues :evaluation of xylo-oligosaccharides productionpt
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceHelsínquiapt
oaire.citation.title2nd Wood Nordic Biorefinery Conferencept
person.familyNameCarvalheiro
person.familyNameDuarte
person.familyNameMoura
person.familyNamePereira
person.familyNameFERREIRA GIRIO
person.givenNameFlorbela
person.givenNameLuís
person.givenNamePatrícia
person.givenNameHelena
person.givenNameFRANCISCO MANUEL
person.identifier59799
person.identifier385852
person.identifier.ciencia-id4016-9476-B97D
person.identifier.ciencia-id7F15-9BC9-79AA
person.identifier.ciencia-idBA17-3D3E-5478
person.identifier.ciencia-idD51D-09A4-A2DC
person.identifier.orcid0000-0002-0270-4832
person.identifier.orcid0000-0001-5820-3669
person.identifier.orcid0000-0001-9333-3231
person.identifier.orcid0000-0002-5393-4443
person.identifier.orcid0000-0002-5376-8430
person.identifier.ridL-1860-2014
person.identifier.ridC-1430-2008
person.identifier.ridA-8330-2015
person.identifier.scopus-author-id6603247136
person.identifier.scopus-author-id56649966600
person.identifier.scopus-author-id7103251554
rcaap.rightsopenAccesspt
rcaap.typeconferenceObjectpt
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