• The 3D-printing fabrication of multichannel silicone microreactors for catalytic applications 

      Ibáñez de Garayo Quilchano, Alejandro; Imizcoz Aramburu, Mikel; Maisterra Udi, Maitane Upna; Almazán, Fernando; Sanz Carrillo, Diego; Bimbela Serrano, Fernando Upna Orcid; Cornejo Ibergallartu, Alfonso Upna Orcid; Pellejero, Ismael Upna Orcid; Gandía Pascual, Luis Upna Orcid (MDPI, 2023)   Artículo / Artikulua  OpenAccess
      Microstructured reactors (MSRs) are especially indicated for highly demanding heterogeneous catalysis due to the small channel dimensions that minimize diffusional limitations and enhance mass and heat transport between ...
    • Acid-catalyzed etherification of glycerol with tert-butanol: reaction monitoring through a complete identification of the produced alkyl ethers 

      Cornejo Ibergallartu, Alfonso Upna Orcid; Reyero Zaragoza, Inés Upna Orcid; Campo Aranguren, Idoia; Arzamendi Manterola, María Cruz Upna Orcid; Gandía Pascual, Luis Upna Orcid (MDPI, 2023)   Artículo / Artikulua  OpenAccess
      Higher tert-Butyl glycerol ethers (tBGEs) are interesting glycerol derivatives that can be produced from tert-butyl alcohol (TBA) and glycerol using an acid catalyst. Glycerol tert-butylation is a complex reaction that ...
    • Comprehensive kinetics of hydrolysis of organotriethoxysilanes by 29Si NMR 

      Moriones Jiménez, Paula Upna Orcid; Arzamendi Manterola, María Cruz Upna Orcid; Cornejo Ibergallartu, Alfonso Upna Orcid; Garrido Segovia, Julián José Upna Orcid; Echeverría Morrás, Jesús Upna Orcid (American Chemical Society, 2019)   Artículo / Artikulua  OpenAccess
      The kinetics of several representative hybrid precursors were studied via 29Si NMR: three alkyl precursors, methyltriethoxysilane, ethyltriethoxysilane, and propyltriethoxysilane; as well as two unsaturated radicals, ...
    • Exploring a low-cost valorization route for amazonian cocoa pod husks through thermochemical and catalytic upgrading of pyrolysis vapors 

      Villasana, Yanet; Armenise, Sabino; Ábrego, Javier; Atienza Martínez, María Upna Orcid; Hablich Alvarracin, Karina Lissett Upna; Bimbela Serrano,  Fernando Upna Orcid; Cornejo Ibergallartu, Alfonso Upna Orcid; Gandía Pascual, Luis Upna Orcid (ACS Publications, 2023)   Artículo / Artikulua  OpenAccess
      Ecuador as an international leader in the production of cocoa beans produced more than 300 000 tons in 2021; hence, the management and valorization of the 2 MM tons of waste generated annually by this industry have a ...
    • Extraction of phenolic compounds from populus salicaceae bark 

      Autor, E.; Cornejo Ibergallartu, Alfonso Upna Orcid; Bimbela Serrano, Fernando Upna Orcid; Maisterra Udi, Maitane Upna; Gandía Pascual, Luis Upna Orcid; Martínez-Merino, V. (MDPI, 2022)   Artículo / Artikulua  OpenAccess
      Lignocellulosic residues have the potential for obtaining high value-added products that could be better valorized if biorefinery strategies are adopted. The debarking of short-rotation crops yields important amounts of ...
    • IAOx induces the SUR phenotype and differential signalling from IAA under different types of nitrogen nutrition in Medicago truncatula roots 

      Buezo Bravo, Javier Upna; Esteban Terradillos, Raquel; Cornejo Ibergallartu, Alfonso Upna Orcid; López Gómez, Pedro Upna Orcid; Marino Bilbao, Daniel Upna Orcid; Chamizo Ampudia, Alejandro Upna; Gil Idoate, María José Upna Orcid; Martínez Merino, Víctor Upna Orcid; Morán Juez, José Fernando Upna Orcid (Elsevier, 2019)   Artículo / Artikulua  OpenAccess
      Indole-3-acetaldoxime (IAOx) is a particularly relevant molecule as an intermediate in the pathway for tryptophan-dependent auxin biosynthesis. The role of IAOx in growth-signalling and root phenotype is poorly studied in ...
    • The importance of the urea cycle and its relationships to polyamine metabolism during ammonium stress in Medicago truncatula 

      Urra Rodríguez, Marina; Buezo Bravo, Javier Upna; Royo Castillejo, Beatriz Upna; Cornejo Ibergallartu, Alfonso Upna Orcid; López Gómez, Pedro Upna Orcid; Cerdán Ruiz, Daniel; Esteban Terradillos, Raquel; Martínez Merino, Víctor Upna Orcid; Gogorcena, Yolanda; Tavladoraki, Paraskevi; Morán Juez, José Fernando Upna Orcid (Oxford University Press, 2022)   Artículo / Artikulua  OpenAccess
      The ornithine–urea cycle (urea cycle) makes a signifcant contribution to the metabolic responses of lower photosynthetic eukaryotes to episodes of high nitrogen availability. In this study, we compared the role of the plant ...
    • Innovative catalyst integration on transparent silicone microreactors for photocatalytic applications 

      Pellejero, Ismael Upna Orcid; Clemente, Alberto; Reinoso, Santiago Upna Orcid; Cornejo Ibergallartu, Alfonso Upna Orcid; Navajas León, Alberto Upna Orcid; Vesperinas Oroz, José Javier; Urbiztondo, Miguel A.; Gandía Pascual, Luis Upna Orcid (Elsevier, 2022)   Artículo / Artikulua  OpenAccess
      Reproducible and controllable incorporation and immobilization of catalysts and other active particles onto silicone microreactor channels is still challenging. In this work, we present an innovative fabrication protocol ...
    • Innovative flow-through reaction system for the sustainable production of phenolic monomers from lignocellulose catalyzed by supported Mo2C 

      Maisterra Udi, Maitane Upna; Atienza Martínez, María Upna Orcid; Hablich Alvarracin, Karina Lissett Upna; Moreira, Rui; Martínez Merino, Víctor Upna Orcid; Gandía Pascual, Luis Upna Orcid; Cornejo Ibergallartu, Alfonso Upna Orcid; Bimbela Serrano, Fernando Upna Orcid (Wiley, 2024)   Artículo / Artikulua  OpenAccess
      Molybdenum carbide supported on activated carbon (β-Mo2C/AC) has been tested as catalyst in the reductive catalytic fractionation (RCF) of lignocellulosic biomass both in batch and in Flow-Through (FT) reaction systems. ...
    • Kinetics of the acid-catalyzed hydrolysis of tetraethoxysilane (TEOS) by 29Si NMR spectroscopy and mathematical modeling 

      Echeverría Morrás, Jesús Upna Orcid; Moriones Jiménez, Paula Upna Orcid; Arzamendi Manterola, María Cruz Upna Orcid; Garrido Segovia, Julián José Upna Orcid; Gil Idoate, María José Upna Orcid; Cornejo Ibergallartu, Alfonso Upna Orcid; Martínez Merino, Víctor Upna Orcid (Springer, 2018)   Artículo / Artikulua  OpenAccess
      Tetraethoxysilane (TEOS) is widely used to synthesize siliceous material by the sol–gel process. However, there is still some disagreement about the nature of the limiting step in the hydrolysis and condensation reactions. ...
    • ModulaTransprot: explorando el uso de la nutrición amoniacal para reducir contenidos de nitrato en hortalizas de hoja en sistemas de cultivo sin suelo 

      Ariz, Idoia Upna Orcid; Rivero Marcos, Mikel Upna Orcid; Cornejo Ibergallartu, Alfonso Upna Orcid; García-Mina Freire, Jose María; Cavero, Rita Yolanda (Interempresas Media, 2021)   Artículo / Artikulua  OpenAccess
      Encontrar alternativas a través del diseño de productos y sistemas sostenibles que aumenten la eficiencia en el uso del nitrógeno y disminuya los contenidos de nitratos en tejidos comestibles es una necesidad científica, ...
    • A new oxidative pathway of nitric oxide production from oximes in plants 

      López Gómez, Pedro Upna Orcid; Buezo Bravo, Javier Upna; Urra Rodríguez, Marina; Cornejo Ibergallartu, Alfonso Upna Orcid; Esteban Terradillos, Raquel; Fernández de los Reyes, Jorge; Urarte Rodríguez, Estíbaliz Upna; Rodríguez-Dobreva, Estefanía; Chamizo Ampudia, Alejandro Upna; Eguaras, Alejandro; Wolf, Sebastian; Marino Bilbao, Daniel Upna Orcid; Martínez Merino, Víctor Upna Orcid; Morán Juez, José Fernando Upna Orcid (Cell Press, 2024)   Artículo / Artikulua
      Nitric oxide (NO) is an essential reactive oxygen species and a signal molecule in plants. Although several studies have proposed the occurrence of oxidative NO production, only reductive routes for NO production, such ...
    • Pretreatment and enzymatic hydrolysis for the efficient production of glucose and furfural from wheat straw, pine and poplar chips 

      Cornejo Ibergallartu, Alfonso Upna Orcid; Alegría Dallo, Irantzu; García Yoldi, Íñigo Upna; Sarobe Martínez, Íñigo Upna; Sánchez, David; Otazu, Eduardo; Funcia, Ibai; Gil Idoate, María José Upna Orcid; Martínez Merino, Víctor Upna Orcid (Elsevier, 2019)   Artículo / Artikulua  OpenAccess
      A flexible approach to a two-step biorefinery for the production of glucose and furfural from three different feedstocks is presented. Pretreatment conditions were selected to drive the production towards the generation ...
    • Production of aromatic compounds by catalytic depolymerization of technical and downstream biorefinery lignins 

      Cornejo Ibergallartu, Alfonso Upna Orcid; Bimbela Serrano, Fernando Upna Orcid; García Yoldi, Íñigo Upna; Maisterra Udi, Maitane Upna; Gandía Pascual, Luis Upna Orcid; Martínez Merino, Víctor Upna Orcid (MDPI, 2020)   Artículo / Artikulua  OpenAccess
      Lignocellulosic materials are promising alternatives to non-renewable fossil sources when producing aromatic compounds. Lignins from Populus salicaceae., Pinus radiata and Pinus pinaster from industrial wastes and biorefinery ...
    • Synthesis and Leishmanicidal activity of novel urea, thiourea, and selenourea derivatives of diselenides 

      Díaz, Marta; Lucio, Hector de; Moreno, Esther; Espuelas, Socorro; Aydillo, Carlos; Jiménez Ruiz, Antonio; Toro, Miguel Ángel; Gutiérrez, Killian Jesús; Martínez Merino, Víctor Upna Orcid; Cornejo Ibergallartu, Alfonso Upna Orcid (American Society for Microbiology, 2019)   Artículo / Artikulua  OpenAccess
      A novel series of thirty-one N-substituted urea, thiourea, and selenourea derivatives containing diphenyldiselenide entities were synthesized, fully characterized by spectroscopic and analytical methods, and screened for ...
    • Systematic diffusion-ordered spectroscopy for the selective determination of molecular weight in real lignins and fractions arising from base-catalyzed depolymerization reaction mixtures 

      Cornejo Ibergallartu, Alfonso Upna Orcid; García Yoldi, Íñigo Upna; Galilea Gonzalo, Rebeca Upna; Hablich Alvarracin, Karina Lissett Upna; Gil Idoate, María José Upna Orcid; Martínez Merino, Víctor Upna Orcid (American Chemical Society, 2020)   Artículo / Artikulua  OpenAccess
      The valorization of biorefinery downstream lignin fractions is a key issue in increasing the sustainability of second-generation biofuels. The development of reliable methodologies for the selective determination of the ...
    • Tryptophan levels as a marker of auxins and nitric oxide signaling 

      López Gómez, Pedro Upna Orcid; Smith, Edward N.; Bota, Pedro; Cornejo Ibergallartu, Alfonso Upna Orcid; Urra Rodríguez, Marina; Buezo Bravo, Javier Upna; Morán Juez, José Fernando Upna Orcid (MDPI, 2022)   Artículo / Artikulua  OpenAccess
      The aromatic amino acid tryptophan is the main precursor for indole-3-acetic acid (IAA), which involves various parallel routes in plants, with indole-3-acetaldoxime (IAOx) being one of the most common intermediates. ...

      El Repositorio ha recibido la ayuda de la Fundación Española para la Ciencia y la Tecnología para la realización de actividades en el ámbito del fomento de la investigación científica de excelencia, en la Línea 2. Repositorios institucionales (convocatoria 2020-2021).
      Logo MinisterioLogo Fecyt