Browsing Articles publicats (Química) by Title
Now showing items 81-100 of 223
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Early-life exposome and lung function in children in Europe: an analysis of data from the longitudinal, population-based HELIX cohort
(Elsevier, 2019-02-06)Background: Several single-exposure studies have documented possible effects of environmental factors on lung function, but none has relied on an exposome approach. We aimed to evaluate the association between a broad range ... -
Eating quality and health-promoting properties of two sweet cherry (Prunus avium L.) cultivars stored in passive modified atmosphere
(SAGE Publications, 2015)Two sweet cherry cultivars ('New Star' and 'Sweet Heart') were chosen to explore the impact of passive modified atmosphere packaging on the eating quality and health-promoting properties of fruit. Packaged and unpackaged ... -
Eating quality of 'Fuji' apples affected by a period of cold air after ULO storage.
(John Wiley & Sons, 2012-02-00)Over two subsequent seasons, emission of volatile compounds, consumer acceptability and quality parameters were analyzed in “Fuji” apples. In both seasons, apples were harvested at the same maturity stage and stored for ... -
Efecto de la amputación de antenas en machos y hembras, de la presencia de planta y de la concentración de feromona en el apareamiento de Sesamia nonagrioides Lef.
(Espanya. Ministerio de Medio Ambiente y Medio Rural y Marino, 1998)Se ha estudiado en laboratorio algunos de los factores que pueden influir en el apareamiento de los individuos de Sesamia nonagrioides Let'., como son la presencia de antenas en los individuos de ambos sexos, la presencia ... -
Effect of controlled atmospheres and shelf life period on concentrations of volatile substances released by 'Pink Lady' apples and on consumer acceptance
(Society of Chemical Industry; John Wiley & Sons, 2009)ACKGROUND: ‘Pink Lady®’ (Malus × domestica Borkh.) apples were harvested at commercial maturity and stored at 1 °C under either air or controlled atmosphere (CA) conditions (2.5 kPa O2: 3 kPa CO2 and 1 kPa O2: 2 kPa CO2) ... -
Effect of enzymatic treatments on dietary fruit fibre properties
(Taylor & Francis, 2017-04-23)Here we studied the modification of fibres derived from the fruit juice industry to prepare new value-added ingredients. These by-products are usually composted or used as animal feed. In this regard, fibres from apple, ... -
Effect of fungal mycelia on the HPLC–UV and UV–vis spectrophotometric assessment of mycelium-bound epoxide hydrolase using glycidyl phenyl ether
(Elsevier, 2016)The use of mycelia as biocatalysts has technical and economic advantages. However, there are several difficulties in obtaining accurate results in mycelium-catalysed reactions. Firstly, sample extraction, indispensable ... -
Effect of polymer coating composition on the aggregation rates of Ag nanoparticles in NaCl solutions and seawaters
(Elsevier, 2018-08-01)The aggregation behaviour of polymer-coated silver nanoparticles (AgNPs) was characterized in NaCl solutions, and in two seawaters of different salinities and dissolved organic matter (DOM) contents. Representative organic ... -
Effect of the flexibility and the anion in the structural and transport properties of ethyl-methyl-imidazolium ionic liquids
(Elsevier, 2007)This work summarizes some results obtained through equilibrium molecular dynamic simulations regarding the structure and transport properties of several ionic liquids (ILs). The Green–Kubo relationships were employed to ... -
Effective affinity distribution for the binding of metal Ions to a generic fulvic acid in natural waters
(American Chemical Society, 2009)The effective distribution of affinities (Conditional Affinity Spectrum, CAS) seen by ametal ion bindingto a humic substance under natural water conditions is derived and discussed within the NICA-Donnan model. Analytical ... -
Effects of a mixture of ligands on metal accumulation in diffusive gradients in thin films (DGT)
(CSIRO Publishing, 2018)Natural waters contain mixtures of ligands, which collectively affect the availability of trace metals. The individual contribution of each complex to the overall metal flux received by a sensor can be described in terms ... -
Electrostatic and specific binding to macromolecular ligands: a general analytical expression for the Donnan volume
(Elsevier, 2007)The dependence of the apparent acid dissociation constant of charged polyacids on the ionic strength and on the degree of dissociation is analysed in terms of the Donnan model. We introduce a new approximate analytical ... -
Elongation of the Hydrophobic Chain as a Molecular Switch:Discovery of Capsaicin Derivatives and Endogenous Lipids as Potent Transient Receptor Potential Vanilloid Channel 2 Antagonists
(American Chemical Society, 2018-09-03)The transient receptor potential vanilloid type-2 (TRPV2) protein is a nonselective Ca2+ permeable channel member of the TRPV subfamily, still considered an orphan TRP channel due to the scarcity of available selective and ... -
Entirely solvent-free biocatalytic synthesis of solketal fatty esters from soybean seeds
(Académie des SciencesElsevier, 2016)Solvent-free reactions are the systems of choice in green chemistry. In addition to contributing to lowering the environmental impact of chemical processes, solvent-free systems can reduce production costs, reaction times, ... -
Entrapment in polymeric material of resting cells of Aspergillus flavus with lipase activity. Application to the synthesis of ethyl laurate
(Royal Society of Chemistry, 2014)The lipase activity of resting cells of Aspergillus flavus was improved by entrapment in various polymeric acrylates (PAAFs). Commercially available ethyl acrylate, butyl acrylate and ethyl methacrylate, and acrylates ... -
Envasado de cerezas 'Sweet Heart' en atmósfera modificada: calidad y compuestos bioactivos
(Interempresas Media, 2013)Para evitar el rápido deterioro de las cerezas en la fase poscosecha es conveniente aplicar tratamientos que frenen la maduración del fruto, y, en consecuencia, que ayuden a mantener su calidad y contenido en compuestos ... -
Esterification of oleic acid catalayzed by an Aspergillus niger strain. Influence of water activity and alcohol concentration
(Facultad de Ciencias de la Universidad del Tolima, 2006)Effects of water activity and 1-propanol concentration on synthesis of propyl oleate from oleic acid using Aspergillus niger cell-bound lipases in isooctane are described. A. niger produces lipases (EC 3.1.1.3) which partly ... -
Evaluation of the Koutecký-Koryta approximation for voltammetric currents generated by metal complex systems with various labilities
(Elsevier, 2002)The voltammetric response of metal complex systems with various labilities is analyzed by rigorous numerical simulation with the Finite Element Method of the time-dependent concentration profiles of the different species. ... -
Evaluation of thin mercury film rotating disk electrode to perform absence of gradients and Nernstian equilibrium stripping (AGNES) measurements
(Elsevier, 2010)In the present work, the applicability of thin mercury film on a rotating disk electrode (TMF-RDE), to assess the free metal ion concentration by the absence of gradients and Nernstian equilibrium stripping (AGNES), is ... -
Experimental evidences for a new model in the description of the adsorption-coupled reduction of Cr(VI) by protonated banana skin
(Elsevier, 2013)This work reports experimental evidences, not previously considered, to evaluate the Cr(VI) removal by protonated banana skin biomass. Variations in the number of hydroxyl groups, quantified by potentiometric titrations, ...