Exploració per autor "Valls Vidal, Cristina"
Ara es mostren els items 21-40 de 91
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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)
Comunicació de congrés
Accés restringit per política de l'editorialThe 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 ... -
Comparative evaluation of the action of two different endoglucanases. Part I: on a fully bleached, commercial acid sulfite dissolving pulp
Quintana, Elisabet; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (2015-04-19)
Article
Accés obertA fully bleached commercial acid dissolving pulp was treated with two endoglucanases, one obtained from Paenibacillus barcinonensis (B) and the other one produced from Cerrena unicolor (F) with the intention to improve ... -
Comparative evaluation of the action of two different endoglucanases. Part II: on a biobleached acid sulphite pulp
Quintana, Elisabet; Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (2015-04-30)
Article
Accés obertA TCF sulphite pulp, bleached at the laboratory scale with a laccase–violuric acid system and complemented with a pressurized hydrogen peroxide stage, was treated with two endoglucanases, one obtained from Paenibacillus ... -
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
Accés obertCellulose 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
Accés obertA 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 ... -
Decoloració de paper reciclat mitjançant processos biotecnològics
Valls Vidal, Cristina; Cusola Aumedes, Oriol; Roncero Vivero, María Blanca (OmniaScience, 2020-01-31)
Text en actes de congrés
Accés obertEn 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)
Comunicació de congrés
Accés restringit per política de l'editorialIn 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 ... -
Development of advanced and multifunctional biomaterials from two- or three-dimensional structures of cellulose
Durango Giraldo, Geraldine; Valls Vidal, Cristina; Roncero Vivero, María Blanca (2023-05-17)
Comunicació de congrés
Accés obert -
Development of an antimicrobial bioactive paper made from bacterial cellulose
Buruaga Ramiro, Carolina; Valenzuela, Susana V.; Valls Vidal, Cristina; Roncero Vivero, María Blanca; Javier Pastor, F.I.; Diaz Lucea, M. Pilar; Martinez Soler, Josefina (2020-09-01)
Article
Accés obertBacterial cellulose (BC) has emerged as an attractive adsorptive material for antimicrobial agents due to its fine network structure, its large surface area, and its high porosity. In the present study, BC paper was first ... -
Differential activity of lytic polysaccharide monooxygenases on celluloses of different crystallinity. Effectiveness in the sustainable production of cellulose nanofibrils
Valenzuela, Susana V.; Valls Vidal, Cristina; Schink, Viviane; Sanchez, Daniel; Roncero Vivero, María Blanca; Diaz Lucea, M. Pilar; Martinez, Josefina; Javier Pastor, F.I. (2019-03-01)
Article
Accés obertA series of cellulosic substrates has been produced, treated with lytic polysaccharide monooxygenase (LPMO) from Streptomyces ambofaciens (SamLPMO10C), and analyzed by high performance anion exchange chromatography (HPAEC) ... -
Dissolving-grade pulp: a sustainable source for fiber production
Quintana, Elisabet; Valls Vidal, Cristina; Roncero Vivero, María Blanca (2024-01-10)
Article
Accés obertThe global textile fiber output increased five times from 1975 to 2020. Also, in 2010, the combined demand for man-made and natural fibers was projected to increase by 84% within 20 years. Clothing materials are largely ... -
Effectiveness of novel xylanases belonging to different GH families on lignin and hexenuronic acids removal from specialty sisal fibres
Valenzuela Mayorga, Susana Valeria; Valls Vidal, Cristina; Roncero Vivero, María Blanca; Vidal Lluciá, Teresa; Díaz Lucea, Pilar; Pastor Blasco, Francisco Ignacio Javier (2014)
Article
Accés restringit per política de l'editorialBackground: The effectiveness of xylanases on lignin removal from pulps differs widely depending on the enzyme family, the type of pulp and the bleaching sequence among other factors. Xylanases can also reduce the presence ... -
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'editorialIn 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 ... -
El potencial de la cel·lulosa en la indústria tèxtil
Quintana, Elisabet; Valls Vidal, Cristina; Roncero Vivero, María Blanca (OmniaScience, 2022-02-01)
Comunicació de congrés
Accés obertLa indústria tèxtil i de la moda és el segon sector industrial més contaminant, després del petroli. Segons l’Agència Europea del Mediambient, el consum de roba per persona a la UE va augmentar un 40 % del 1996 al 2012. ... -
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
Accés obertIn 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 (2020-06-12)
Article
Accés obertIn 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. ... -
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)
Comunicació de congrés
Accés restringit per política de l'editorialIn 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 ... -
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'editorialIn 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 ... -
Enzymatic strategies to improve removal of hexenuronic acids and lignin from cellulosic fibers
Valls Vidal, Cristina; Vidal Lluciá, Teresa; Roncero Vivero, María Blanca (2014)
Article
Accés restringit per política de l'editorialDifferent enzymatic strategies were applied to improve lignin and hexenuronic acid (HexA) removal. Three laccases (L) with different redox potentials were applied in combination with 1-hydroxybenzotriazole or methyl syringate ... -
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)
Text en actes de congrés
Accés restringit per política de l'editorialThis 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 ...