Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/13817

TitleEnzymatic polymerization on the surface of functionalized cellulose fibers
Author(s)Kim, Suyeon
Zille, Andrea
Murkovic, M.
Guebitz, G. M.
Paulo, Artur Cavaco
KeywordsEnzymes
Biopolymers
Radical polymerization
Coatings
Mass spectrometry
Issue dateJun-2007
PublisherElsevier
JournalEnzyme and Microbial Technology
Abstract(s)Enzymatic coating of functionalized cellulose fibers with catechol was performed in the presence of Trametes hirsuta laccase. Cellulose functionalization was done by covalent fixation of aromatic amines onto the cellulose surface using a dyeing procedure with C.I. Reactive Black 5 (RB5) followed by reduction with sodium hydrosulfite. Cellulase enzymes were used on coated and control samples to obtain the analytes linked with the soluble sugars in solution, to prove the reaction concepts described in this paper. Hydrolyzed coated-cellulose showed lower concentration of reducing sugars (1188 mg/L) than control samples (2011 mg/L). The structures of these compounds were checked by LC/MS analysis confirming the presence of functionalized glucose and cellobiose units coupled to poly(catechol) molecules (m/z 580 and m/z 633). Alkali extraction method showed to be very promising to coat cellulose fibers with phenols in the presence of enzymes, at mild conditions of temperature and pH.
TypeArticle
URIhttp://hdl.handle.net/1822/13817
DOI10.1016/j.enzmictec.2007.01.001
ISSN0141-0229
Publisher versionhttp://www.sciencedirect.com/science/article/pii/S0141022907000178
Peer-Reviewedyes
AccessOpen access
Appears in Collections:DET/2C2T - Artigos em revistas internacionais com arbitragem científica

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