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|Title:||Antimicrobial and antioxidant linen via laccase-assisted grafting|
|Author(s):||Silva, Carla Manuela Pereira Marinho da|
Matamá, Maria Teresa
Prasetyo, E. N.
Nyanhongo, Gibson S.
Guebitz, G. M.
Paulo, Artur Cavaco
|Journal:||Reactive and Functional Polymers|
|Abstract(s):||A laccase from Ascomycetemyceliophthora 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.|
|Appears in Collections:||DET/2C2T - Artigos em revistas internacionais com arbitragem científica|
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|2011 Antimicrobial and antioxidant linen via laccase-assisted grafting.pdf||Antimicrobial and antioxidant linen via laccase-assisted grafting||838,36 kB||Adobe PDF||View/Open|