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Modification of cellulose fiber surfaces by use of a lipase and a xyloglucan endotransglycosylase
KTH, Skolan för bioteknologi (BIO), Biokemi.ORCID-id: 0000-0002-2993-9375
Vise andre og tillknytning
2005 (engelsk)Inngår i: Biomacromolecules, ISSN 1525-7797, E-ISSN 1526-4602, Vol. 6, nr 1, s. 196-203Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A strategy for the modification of cellulose fiber surfaces was developed that used the ability of Candida antarctica lipase B (CALB) to acylate carbohydrates with high regioselectivity, combined with the transglycosylating activity of the Populus tremula x P. tremuloides xyloglucan endotransglycosylase 16A (PttXET16A). Xyloglucan oligosaccharides (XGOs) prepared from tamarind xyloglucan were acylated with CALB as a catalyst and vinyl stearate or gamma-thiobutyrolactone as acyl donors to produce carbohydrate molecules with hydrophobic alkyl chains or reactive sulfhydryl groups, respectively. The modified XGOs were shown to act as glycosyl acceptors in the transglycosylation reaction catalyzed by PttXET16A and could therefore be incorporated into high M-r xyloglucan chains. The resulting xyloglucan molecules exhibited a high affinity for cellulose surfaces, which enabled the essentially irreversible introduction of fatty acid esters or thiol groups to cellulose fibers.

sted, utgiver, år, opplag, sider
2005. Vol. 6, nr 1, s. 196-203
Emneord [en]
ring-opening polymerization, fatty-acid esters, plant-cell walls, organic media, enzymatic acylation, catalyzed synthesis, pichia-pastoris, fusion protein, oligosaccharides, optimization
Identifikatorer
URN: urn:nbn:se:kth:diva-14465DOI: 10.1021/bm049588iISI: 000226344300027Scopus ID: 2-s2.0-14044277441OAI: oai:DiVA.org:kth-14465DiVA, id: diva2:332506
Merknad
QC 20100525Tilgjengelig fra: 2010-08-05 Laget: 2010-08-05 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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