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Determination of sugar content in Pinus pinaster and its corresponding hollocellulose, cellulose and kraft pulps

2003Journal article Open access
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dc.contributor.authorDuarte, Ana Paula
dc.contributor.authorGaiolas, Carla Sofia Cardona Jorgept
dc.contributor.authorBelgacem, Mohamed Naceur
dc.contributor.authorSimões, Rogério
dc.date.accessioned2010-04-28T10:06:59Z
dc.date.available2010-04-28T10:06:59Z
dc.date.issued2003
dc.description.abstractThis paper deals with the study of the polysaccharide complex from Portuguese Pinus pinaster, as well as from its main components, i.e., holocellulose, cellulose and pulps obtained using different cooking conditions. Nordic Pinus sylvestris was also studied in order to compare it with Portuguese pine. Two methods were used: one consisted of the hydrolysis of polysaccharides with trifluoroacetic acid (TFA) and quantification of the amount of each sugar using High Performance Liquid Chromatography (HPLC). The latter approach used here consisted of the hydrolysis of the samples under scrutiny by sulphuric acid and converting it into alditols, which were then esterified before injecting to Gas Chromatography coupled with Mass Spectrometry. Myo-inositol was used as an internal standard. The results obtained by the two methods showed that the TFA procedure prevents monosaccharide degradation, comparatively with the sulphuric acid one. In fact, the overall sugar yield was found systematically higher than 93% for TFA hydrolysis, whereas that corresponding to H2SO4 treatment never exceeded 77%. The sugar composition of both pines was found very similar and the sulfidity level (from 10 to 55%) did not affect the pulp sugar composition. The glucose/mannose and xylose/arabinose ratios were found to be around 3.5 for both Portuguese and Nordic pines. Finally, kraft pulping of Pinus pinaster was found to affect drastically galactose, mannose and arabinose.pt
dc.identifier.urihttp://hdl.handle.net/10400.6/574
dc.languageeng
dc.subjectPolysaccharidept
dc.subjectPinus pinasterpt
dc.subjectSugarpt
dc.subjectHollocellulosept
dc.subjectKraft pulppt
dc.titleDetermination of sugar content in Pinus pinaster and its corresponding hollocellulose, cellulose and kraft pulpspt
dc.typejournal article
dspace.entity.typePublication
oaire.citation.issue37(1-2)pt
oaire.citation.titleCellulose Chemistry and Technologypt
person.familyNameDuarte
person.familyNameBelgacem
person.familyNameSimões
person.givenNameAna Paula
person.givenNameMohamed Naceur
person.givenNameRogério Manuel Santos
person.identifier1255684
person.identifier.ciencia-idBC15-D376-80FE
person.identifier.ciencia-idC61A-FEC7-573C
person.identifier.orcid0000-0003-3333-5977
person.identifier.orcid0000-0002-3317-7369
person.identifier.orcid0000-0001-8143-1555
person.identifier.ridB-5904-2009
person.identifier.ridB-7123-2016
person.identifier.scopus-author-id7102602131
person.identifier.scopus-author-id7003580370
rcaap.rightsopenAccess
rcaap.typearticlept
relation.isAuthorOfPublication971779ac-7c22-4f69-8bdd-4e0ec442ef2d
relation.isAuthorOfPublication2bce69fd-cc05-44dd-bb7d-84864ba470a1
relation.isAuthorOfPublication09cfc862-f9eb-4943-862c-790e0224d370
relation.isAuthorOfPublication.latestForDiscovery971779ac-7c22-4f69-8bdd-4e0ec442ef2d

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