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Biovalorization of technical lignins for added-value products and applications

2005Artigo científico Acesso aberto
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dc.contributor.authorDuarte, J. C. Cardoso
dc.contributor.authorMalcata, F. Xavier
dc.contributor.authorMoreira, P.
dc.contributor.authorAlmeida-Vara, E.
dc.contributor.authorSena-Martins, G.
dc.date.accessioned2011-10-14T14:38:11Z
dc.date.available2011-10-14T14:38:11Z
dc.date.issued2005
dc.description.abstractLignin is an abundant non-toxic amorphous natural polymer. Nowadays it is available a great variety and large amounts of technical lignins as by-products from the pulp and paper industries. Some successful biotechnological applications of enzymatically modified lignins are described in the literature, namely for the production of lignin based copolymers, binders for wood composites, chelating agents, compositions for treating porous materials, coatings, paintings and others. From a new species from Bjerkandera genus which exhibits high decolourisation activity on Poly R-478 and Remazol Brilliant Blue R (RBBR) dyes, was isolated, purified and identified the main enzyme responsible for Remazol Brilliant Blue R dye decolourisation. Such an enzyme is able to oxidise manganese, as well as VA and DMP in manganese-independent reactions; the enzyme substrate range for oxidation of several phenolic and non-phenolic aromatic compounds was determined. This enzyme was tested for transformation of a lignin fraction obtained from straw pulping. Characterisation by gel filtration chromatography of the evolution of the molecular mass distribution of the lignin fragments generated by said enzyme indicated that this enzyme is able to interact directly with lignin in the absence of other mediators.por
dc.identifier.citationDUARTE, J. C. Cardoso... [et al.] - Biovalorization of technical lignins for added-value products and applications. In European Biomass Conference Biomass for Energy, Industry and Climate Protection, 14, Paris, France, 17-21 October, 2005 - Proceedings of the 14th European Biomass Conference Biomass for Energy, Industry and Climate Protection. [S.l. : ETA / WIP-Munich, 2005]. ISBN 88-89407-07-7. 4 p.por
dc.identifier.urihttp://hdl.handle.net/10400.14/6087
dc.language.isoengpor
dc.peerreviewednopor
dc.publisherETA / WIP-Munichpor
dc.subjectBio-materialspor
dc.subjectEnzymespor
dc.subjectLigninpor
dc.titleBiovalorization of technical lignins for added-value products and applicationspor
dc.typejournal article
dspace.entity.typePublication
person.familyNameMalcata
person.givenNameFrancisco
person.identifier.ciencia-id1B13-38A5-35F5
person.identifier.orcid0000-0003-3073-1659
person.identifier.scopus-author-id7102542478
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationa06c00da-0e2f-4434-8ede-4d7b22c0dfe9
relation.isAuthorOfPublication.latestForDiscoverya06c00da-0e2f-4434-8ede-4d7b22c0dfe9

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