Now showing items 8-21 of 21

  • 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 ...
  • 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 ...
  • 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 ...
  • Paper functionalization by means of enzymatic surface treatments using hydrophobic compounds and lignosulfonates 

    Cusola Aumedes, Oriol; García Ubasart, Jordi; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (2012)
    Conference report
    Restricted access - publisher's policy
    In the present work an innovative method for achieving enzymatic surface functionalization on finished paper sheets is presented. A commercial filter paper was surface sized with laccase derived from Trametes Villosa, ...
  • Particulate coatings via evaporation-induced self-assembly of polydisperse colloidal lignin on solid interfaces 

    Cusola Aumedes, Oriol; Kivistö, Samu; Vierros, Sampsa; Batys, Piotr; Ago, Mariko; Tardy, Blaise L.; Greca, Luiz G.; Roncero Vivero, María Blanca; Sammalkorpi, Maria; Rojas, Orlando J. (2018-05-02)
    Article
    Restricted access - publisher's policy
    Polydisperse smooth and spherical biocolloidal particles were suspended in aqueous media and allowed to consolidate via evaporation-induced self-assembly. The stratification of the particles at the solid–air interface was ...
  • Potencial de la celulosa en la construcción de nuevos materiales 

    Vidal Lluciá, Teresa; Torres López, Antonio Luis; Valls Vidal, Cristina; Cusola Aumedes, Oriol; López Martínez, Joan Antoni; Fernández Santos, Julia; Clemente Escuin, Antonio; Roncero Vivero, María Blanca (OmniaScience, 2019-01-31)
    Conference report
    Open Access
    Actualmente, más de una tercera parte de los tipos de papeles que hoy empleamos son para nuevos usos que hace diez años no existían. Además, la demanda creciente de productos basados en materias primas renovables y la ...
  • Potencial de la celulosa en la construcción de nuevos materiales 

    Vidal Lluciá, Teresa; Torres López, Antonio Luis; Valls Vidal, Cristina; Cusola Aumedes, Oriol; López Martínez, Joan Antoni; Fernández Santos, Julia; Clemente Escuin, Antonio; Roncero Vivero, María Blanca; Casals Terré, Jasmina; Farré Lladós, Josep (2019)
    Conference report
    Open Access
    Actualmente, más de una tercera parte de los tipos de papeles que hoy empleamos son para nuevos usos que hace diez años no existían. Además, la demanda creciente de productos basados en materias primas renovables y la ...
  • Rapid functionalisation of cellulose-based materials using a mixture containing laccase activated lauryl gallate and sulfonated lignin 

    Cusola Aumedes, Oriol; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (2014-01-11)
    Article
    Restricted access - publisher's policy
    An innovative method has been developed for the surface hydrophobisation of cellulose-based materials by coating it with a functionalised solution (FS), in which sonicated lauryl gallate (LG, dodecyl 3,4,5,-trihydroxybenzoate), ...
  • Surface functionalization of cellulosic substrates by using chemical and biotechnological methods 

    Cusola Aumedes, Oriol (Universitat Politècnica de Catalunya, 2013-12-20)
    Doctoral thesis
    Open Access
    This thesis deals with the surface modification of cellulosic substrates by use of chemo-enzymatic methods. Functionalizing cellulose is intended to adjust its properties for various purposes, but particularly for obtaining ...
  • Using electrochemical methods to study the kinetics of laccase-catalyzed oxidation of phenols 

    Cusola Aumedes, Oriol; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (2018-02-01)
    Article
    Open Access
    In the present work, the laccase kinetics upon the oxidation process of phenolic compounds was studied using cyclic voltammetry (CV). Several hydroxybenzoic and cinnamic acid compounds were analyzed, and the oxidation ...