Exploració per tema "Cellulase"

Ara es mostren els items 1-9 de 9

    • A novel enzymatic approach to nanocrystalline cellulose preparation 

      Beltramino, Facundo; Roncero Vivero, María Blanca; Vidal Lluciá, Teresa; Valls Vidal, Cristina (2018-06-01)
      Article
      Accés obert
      In this work, conditions for an enzymatic pretreatment prior to NCC isolation from cotton linter were assessed. Different cellulase doses and reaction times were studied within an experimental design and NCC were obtained. ...

    • Assessment of the potential of enzymes to produce dissolving pulps 

      Valls Vidal, Cristina; Quintana, Elisabet; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (Universidade de Aveiro, 2018)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      In this work, a totally chlorine free (TCF) sequence including a laccase-mediator system was developed in a softwood sulfite pulp. Then, purification was carried out employing strong alkaline extractions and hydrolytic ...

    • Biomodification of cellulose flax fibers by a new cellulase 

      García Ubasart, Jordi; Torres López, Antonio Luis; Vila, Carlos; Pastor, Francisco J.; Vidal Lluciá, Teresa (2013-01)
      Article
      Accés restringit per política de l'editorial
      The potential of the new cellulase Cel9B from Paenibacillus barcinonensis for the modification of cellulose flax fibers was for the first time assessed in this work. Cel9B treatments were found to enhance the development ...

    • Effects of a cellulase treatment on the preparation process and final properties of nanocrystalline cellulose 

      Beltramino Heffes, Facundo; Roncero Vivero, María Blanca; Vidal Lluciá, Teresa; Torres López, Antonio Luis; Valls Vidal, Cristina (2015)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      In this work, we introduced an enzymatic treatment with a cellulase prior to NCC isolation from fibers via sulfuric acid hydrolysis, combining biotechnological and chemical procedures. NCC isolation process has typically ...

    • Endoglucanase treatments for improving pulp reactivity in biobleached and commercial dissolving pulps 

      Quintana, Elisabet; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (2015)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      In this study, a bleached commercial dissolving pulp and a TCF sulphite pulp, bleached at the laboratory scale with a laccase–violuric acid system and complemented with a pressurized hydrogen peroxide stage (LVAPO), were ...

    • Increasing yield of nanocrystalline cellulose preparation process by a cellulase pretreatment 

      Beltramino Heffes, Facundo; Roncero Vivero, María Blanca; Vidal Lluciá, Teresa; Torres López, Antonio Luis; Valls Vidal, Cristina (2015-06-09)
      Article
      Accés obert
      In this work the introduction of a cellulase treatment prior to NCC isolation was assessed. NCC was produced using sulfuric acid at two different concentrations (62 and 64% wt.). The effect of pore size for filtration step ...

    • Optimization of sulfuric acid hydrolysis conditions for preparation of nanocrystalline cellulose from enzymatically pretreated fibers 

      Beltramino Heffes, Facundo; Roncero Vivero, María Blanca; Torres López, Antonio Luis; Vidal Lluciá, Teresa; Valls Vidal, Cristina (2016-03-22)
      Article
      Accés obert
      NCC preparation using sulfuric acid hydrolysis from cellulase pretreated fibers was optimized in order to obtain the highest possible yield with 62% and 65% wt. sulfuric acid throughout two statistical plans. At optimal ...

    • Simultaneous sonochemical-enzymatic coating of medical textiles with antibacterial ZnO nanoparticles 

      Petkova Petkova, Petya Stoyanova; Francesko, Antonio; Perelshtein, Ilana; Gedanken, Aharon; Tzanov, Tzanko (2016-03-01)
      Article
      Accés obert
      The antimicrobial finishing is a must for production of medical textiles, aiming at reducing the bioburden in clinical wards and consequently decreasing the risk of hospital-acquired infections. This work reports for the ...

    • Using biotechnology for paper functionalisation: flax fibers with antimicrobial properties 

      Fillat Latorre, Amanda; Gallardo Román, Óscar; Vidal Lluciá, Teresa; Pastor Blasco, Francisco I. Javier; Díaz, Pilar; Roncero Vivero, María Blanca (2010)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      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 ...