Now showing items 1-20 of 37

    • A facile and green method to hydrophobize films of cellulose nanofibrils and silica by laccase-mediated coupling of nonpolar colloidal particles 

      Cusola Aumedes, Oriol; Roncero Vivero, María Blanca; Vidal Lluciá, Teresa; Rojas, Orlando J. (2014-10-01)
      Article
      Restricted access - publisher's policy
      Hydrophobic particles based on dodecyl 3,4,5-trihydroxybenzoate (LG) were coupled onto the surface of cellulose nanofibrils (CNFs) and silica by treatment with a multicomponent colloidal system (MCS) derived from the ...
    • A straightforward bioprocess for a cleaner paper decolorization 

      Valls Vidal, Cristina; Cusola Aumedes, Oriol; Vidal Lluciá, Teresa; Torres López, Antonio Luis; Roncero Vivero, María Blanca (2019-07-17)
      Article
      Open Access
      A new biotechnological sequence for decolorizing red and black colored paper was developed to reduce the environmental impact of the chemicals used in paper recycling processes. Commercially available low-redox potential ...
    • Application of surface enzyme treatments using laccase and a hydrophobic compound to paper-based media 

      Cusola Aumedes, Oriol; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (2013-01-11)
      Article
      Restricted access - publisher's policy
      A new approach for the hydrophobization of finished cellulosic substrates based on a previously reported enzymatic technique is proposed. Commercial finished paper was hydrophobized by using laccase from Trametes villosa ...
    • Bacterial cellulose for increasing barrier properties of paper products 

      Fillat Latorre, Amanda; Martinez, Josefina; Valls Vidal, Cristina; Cusola Aumedes, Oriol; Roncero Vivero, María Blanca; Vidal Lluciá, Teresa; Valenzuela, Susana V.; Diaz Lucea, M. Pilar; Pastor Blasco, Francisco Ignacio Javier (2018-08-07)
      Article
      Open Access
      Bacterial cellulose was combined with wood cellulose papers in order to obtain biomaterials with increased barrier properties. For this purpose, different parameters were assessed: two producing bacterial strains ...
    • Biorefinery: the paper mill of tomorrow 

      Vidal Lluciá, Teresa; Torres López, Antonio Luis; Valls Vidal, Cristina; Cusola Aumedes, Oriol; Quintana, Elisabet; Andreu Terrén, Glòria; Aracri, Elisabetta; Fillat Latorre, Amanda; García Ubasart, Jordi; Beltramino, Facundo; Clemente Escuin, Antonio; Roncero Vivero, María Blanca (Campus de Terrassa de la UPC, 2013-06-13)
      Conference report
      Open Access
    • Coating of laccase-activated phenols for the industrially-feasible functionalization of cellulose-based substrates 

      Cusola Aumedes, Oriol; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (2014)
      Conference lecture
      Restricted access - publisher's policy
      The present work describes an innovative method for the hydrophobization of cellulosic material by impregnation with an enzymatically obtained functionalization solution (FS). Application of FS to the surface of previously ...
    • Composites of cellulose nanocrystals in combination with either cellulose nanofibril or carboxymethylcellulose as functional packaging films 

      Fernández Santos, Julia; Valls Vidal, Cristina; Cusola Aumedes, Oriol; Roncero Vivero, María Blanca (Elsevier, 2022-06-30)
      Article
      Open Access
      Cellulose nanocrystals (CNC) were mixed with either cellulose nanofibril (CNF) or carboxymethylcellulose (CMC) in variable proportions (0/100, 20/80, 40/60, 50/50, 60/40, 80/20 and 100/0) to obtain cast films with acceptable ...
    • Conferring antioxidant capacity to cellulose based materials by using enzymatically-modified products 

      Cusola Aumedes, Oriol; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (2015-05-30)
      Article
      Open Access
      A new, industrially feasible method for conferring cellulosic substrates antioxidant properties by using enzymatic products was developed. The method allows cellulose surfaces such as those of paper sheets to be conferred ...
    • Cyclodextrin functionalization of several cellulosic substrates for prolonged release of antibacterial agents 

      Cusola Aumedes, Oriol; Tabary, Nicolas; Naceur Belgacem, Mohamed; Bras, Julien (Wiley InterScience, 2012-11-13)
      Article
      Restricted access - publisher's policy
      Several cellulosic substrates have been surface-functionalized with cyclomaltoheptaose (b-cyclodextrin, b-CD) using citric acid as a crosslinker agent to obtain new surface-modified materials able to release antiseptic ...
    • Decoloració de paper reciclat mitjançant processos biotecnològics 

      Valls Vidal, Cristina; Cusola Aumedes, Oriol; Roncero Vivero, María Blanca (OmniaScience, 2020-01-31)
      Conference report
      Open Access
      En aquest treball es proposa una nova seqüència biotecnològica per decolorar papers de color (vermell i negre). Per a aquest propòsit, s’utilitzen enzims del tipus lacasa en combinació amb mediadors naturals. Les propietats ...
    • Developing antioxidant capacity to cellulose-based materials by using enzymatically-modified products 

      Cusola Aumedes, Oriol; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (2015)
      Conference lecture
      Restricted access - publisher's policy
      In the present work various laccases (Lac) and different phenolic compounds potentially possessing antioxidant action were used in an enzymatic reaction to prepare several functionalization solutions (FS), which were then ...
    • Effect of the laccase mediator system on the fibre properties of TCF bleached kraft pulp 

      Cadena Chamorro, Edith Marleny; Cusola Aumedes, Oriol; Vidal Lluciá, Teresa; Torres López, Antonio Luis (2011)
      Conference report
      Restricted access - publisher's policy
      The application of the laccase mediator system (L stage) to TCF bleached pulp from Eucalyptus globulus with a low residual lignin content provides useful information about its effect in the hexenuronic acids content, ...
    • Electrochemical insights on the hydrophobicity of cellulose substrates imparted by the enzymatically-oxidized gallates with increasing alkyl chain length 

      Cusola Aumedes, Oriol; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Tzanov, Tzanko; Roncero Vivero, María Blanca (2015-06-09)
      Article
      Open Access
      In this work, we studied the influence of the alkyl chain length in enzymatically-oxidized gallates on the development of hydrophobicity on paper-based materials, and further correlated the obtained effect to the redox ...
    • Elucidating the chemical nature of laccase-modified alkyl gallates 

      Cusola Aumedes, Oriol; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (Universidade de Aveiro, 2018)
      Conference lecture
      Restricted access - publisher's policy
      In the present work we investigated the chemical changes undergone by enzyme-oxidized lauryl gallate (LG, dodecyl 3,4,5,-trihydroxybenzoate) by using Fourier transform infrared (FTIR) spectroscopy, and an oxidation mechanism ...
    • Elucidating the chemical nature of laccase-modified alkyl gallates 

      Cusola Aumedes, Oriol; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (2020-06-12)
      Article
      Open Access
      In the first part of the present work, relevant findings concerning the laccase (Lacc) activation of alkyl gallates, and its implementation in developing hydrophobic properties on cellulose-based substrates are reported. ...
    • Enzymatic treatments of paper surface using laccase, hydrophobic compounds and lignin 

      Cusola Aumedes, Oriol; Roncero Vivero, María Blanca; García Ubasart, Jordi; Valls Vidal, Cristina (2011)
      Conference report
      Restricted access - publisher's policy
      This study demonstrates the potential of applying surface enzymatic treatments on finished paper sheets to improve their physical characteristics. Research studies have recently reported that is possible to internally size ...
    • Evaluating the potential of ozone in creating functional groups on cellulose 

      Valls Vidal, Cristina; Cusola Aumedes, Oriol; Roncero Vivero, María Blanca (Springer, 2022-08-01)
      Article
      Open Access
      Several eucalyptus pulps (85% of cellulose) with different lignin and HexA content (unbleached, TCF and ECF) as well as cotton linters (97% of cellulose) were treated with ozone (at different pH and ozone doses) in order ...
    • Fabricación de films para envasado de alimentos a partir de nanocelulosa y carboximetilcelulosa 

      Fernández Santos, Julia; Valls Vidal, Cristina; Cusola Aumedes, Oriol; Roncero Vivero, María Blanca (OmniaScience, 2022-02-01)
      Part of book or chapter of book
      Open Access
      Se han obtenido films con propiedades barrera avanzadas a partir de mezclar nanocelulosa cristalina (CNC) con nanocelulosa fibrilar (CNF) y el derivado celulósico carboximetilcelulosa (CMC), con el fin de aplicarlos como ...
    • Functionalization of cellulosic model substrates via laccase-mediated coupling of non-polar particles 

      Cusola Aumedes, Oriol; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca; Rojas, Orlando J. (2014)
      Conference report
      Restricted access - publisher's policy
      In the present work we investigate the physicochemical interactions between silica and nanofibrillar cellulose (CNF) with a multi component system (MCS) obtained from an enzymatic reaction of a laccase enzyme and a short-chain ...
    • Functionalization of cellulosic substrates using a product derived from an enzymatic reaction 

      Cusola Aumedes, Oriol; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (2013)
      Conference report
      Restricted access - publisher's policy
      The present work describes a new method for the surface functionalization of cellulosic sheets, overcoming the limitations of the traditional treatments, which are usually performed using fibrous suspensions. The method ...