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Gewählte Publikation:

Silva, C; Matama, T; Kim, S; Padrao, J; Prasetyo, EN; Kudanga, T; Nyanhongo, GS; Guebitz, GM; Casal, M; Cavaco-Paulo, A.
(2011): Antimicrobial and antioxidant linen via laccase-assisted grafting
REACT FUNCT POLYM. 2011; 71(7): 713-720. FullText FullText_BOKU

A laccase from Ascomycete myceliophthora thermophila was used to assist the binding of chitosan and catechin onto a previous enzymatically oxidized linen surface. The process consists of the pre-treatment of the linen with laccase followed by the application of chitosan in a first step and catechin plus laccase in a second step. The results presented here support the conclusion that laccase is able to oxidize phenols naturally existing in flax fibres, and that the o-quinones formed promote the attachment of chitosan or/and catechin. The pre-treatment of linen with laccase is therefore the key factor for the success of catechin and chitosan grafting. A multifunctional linen product with both antioxidant and antibacterial properties was obtained with an acceptable level of durability in terms of end user requirements. (C) 2011 Elsevier Ltd. All rights reserved.
Autor*innen der BOKU Wien:
Gübitz Georg
Nyanhongo Gibson Stephen
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