DSpace DSpace UPC
  Pàgina principal | Llistar continguts | Cerca avançada | Com participar-hi Català   Castellano   English  


Títol: Using biotechnology for paper functionalisation: flax fibers with antimicrobial properties
Autor: Fillat Latorre, Amanda
Gallardo, Oscar
Vidal Lluciá, Teresa
Pastor Blasco, Francisco I. Javier
Díaz, Pilar
Roncero Vivero, María Blanca
Altres autors/autores: Universitat Politècnica de Catalunya. Departament d'Enginyeria Tèxtil i Paperera
Matèries: Àrees temàtiques de la UPC::Enginyeria paperera::Fabricació del paper
Papermaking
Cellulase
Paper -- Fabricació -- Innovacions tecnològiques
Tipus de document: Conference lecture
Descripció: Unbleached flax fibres were treated with laccase from Pycnoporus cinnabarinus and low molecular weight phenols (syringaldehyde –SA, acetosyringone –AS- and p-coumaric acid –PCA-) to biomodify lignocellulosic fibres in order to confer them antibacterial properties. After the enzymatic treatment, PCA, SA and AS produced an increase in kappa number (lignin estimation), which is due to a partial covalent binding of the phenoxy radicals on pulp. To take advantage of the tendency of these natural phenols to couple to fibres, a standard method to determine bacterial growing inhibition was carried out. Antimicrobial properties of the pulps were tested on S. aureus, P. aeruginosa and K. pneumonia. Treated pulps produced a greater reduction in viable organisms than the laccase control after the same contact time, in some cases nearly total organism elimination was seen. Optical properties of treated papers were also measured in order to evaluate the possible coloration obtained. These results suggest that these low molecular weight phenols are covalently bounded to the flax fibres by the laccase and can act as antimicrobial agents.
Altres identificadors i accés: Fillat, A. [et al.]. Using biotechnology for paper functionalisation: flax fibers with antimicrobial properties. A: TECNICELPA Conference and Exhibition and Iberoamerican Congress on Pulp and Paper Research. "XXI TECNICELPA Conference and Exhibition / VI CIADICYP 2010". Lisbon: 2010.
http://hdl.handle.net/2117/15298
Disponible al dipòsit:E-prints UPC
Comparteix:


SFX Query

Tots els ítems dipositats a UPCommons estan protegits per drets d'autor.

 

Valid XHTML 1.0! Programari DSpace Copyright © 2002-2004 MIT and Hewlett-Packard Comentaris
Universitat Politècnica de Catalunya. Servei de Biblioteques, Publicacions i Arxius