Browsing Articles publicats (Química) by Title
Now showing items 50-69 of 275
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Characterisation of phenolic compounds in processed fibres from the juice industry
(Elsevier, 2015)The content of phenolic compounds was determined in nine industrially processed fibres derived from the juice industry. Apple, peach, and pear as non-citrus fruit fibres were examined, as well as orange peel and flesh, ... -
Characterization of cuticle composition after cold storage of "Celeste" and "Somerset" sweet cherry fruit
(American Chemical Society, 2014-08-04)Cuticle composition and structure may be relevant factors affecting the storage potential of fruits, but very few studies have analyzed fruit cuticle composition from a postharvest perspective. In this work, the chemical ... -
Characterization of Fuji apples from different harvest dates and storage conditions from measurements of volatiles by gas chromatography and electronic nose
(American Chemical Society, 2004)Volatile compounds in Fuji apples harvested at two different maturities were measured at harvest and after 5 and 7 months of cold storage (1 °C) in four different atmospheres. When the samples were characterized by both ... -
Chemical and Sensory Characterization of Nine Spanish Monovarietal Olive Oils: An Emphasis on Wax Esters
(MDPI, 2021-02-19)Olive oil is an essential part of the so-called “Mediterranean diet”, purportedly one of the healthiest gastronomic traditions in the world. The wax content in olive oil is regulated under European Union directives, and ... -
Chemical composition and water permeability of fruit and leaf cuticles of Olea europaea L.
(2017-09-07)The plant cuticle, protecting against uncontrolled water loss, covers olive (Olea europaea) fruits and leaves. The present study describes the organ-specific chemical composition of the cuticular waxes and the cutin and ... -
Cold storage conditions affect the persistence of diphenylamine, folpet and imazalil residues in 'Pink Lady®' apples.
(Elsevier, 2009)'Pink Lady®' apples (Malus domestica) fruit were harvested at commercial maturity treated with three different agrochemical products, and stored at 1 °C under either air or controlled atmosphere conditions (2.5 kPa O2 + 3 ... -
Combined analysis of primary metabolites and phenolic compounds to authenticate commercial monovarietal peach purees and pear juices
(MDPI, 2019-09-10)Here we authenticated single-varietal peach purees and pear juices on the basis of primary metabolite and phenolic compound analysis by Proton Nuclear Magnetic Resonance (1H-NMR) and Ultra Performance Liquid Chromatography ... -
Combining a flow reactor with spray dryer to allow the preparation of food-grade quality sodium 2-polyhydroxyalkyl-1,3-thiazolidine-4-carboxylates with a low environmental impact
(Royal Society of Chemistry, 2016)The 1,3-thiazolidine-4-carboxylic acid (TCA) and 2-substituted 1,3-thiazolidine-4-carboxylic acids (2S-TCAs) are used as additive prodrugs of cysteine and glutathione in agronomy and in the food and pharmaceutical industries. ... -
Combining AlCl3·6H2O and an ionic liquid to prepare chlorohydrin esters from glycerol
(Elsevier, 2009)We describe here the first example in which glycerol has been transformed into chlorohydrin esters using an ionic liquid and hydrated aluminium chloride. The method avoids using Crown-18 ether, which was needed to obtain ... -
Combining biocatalysts to achieve new phase change materials. Application to non-edible animal fat
(Elsevier, 2018)The thermal properties of various alkyl threo-9, 10-dihydroxystearates (DHSEs) prepared from non-edible fat were studied. Non-edible animal fat was hydrolyzed in a 93% yield with R. oryzae resting cells. Crude unsaturated ... -
Combining regio- and enantioselectivity of lipases for the preparation of (R)-4-chloro-2-butanol
(Wiley, 2007)Preparation of 98% ee (R)-4-chloro-2-butanol was carried out by the enzymatic hydrolysis of chlorohydrin esters, using fungal resting cells and commercial enzymes. Hydrolyzes were carried out using lipases from Candida ... -
Comment on: Deuterium nuclear fusion at room temperature: A pertinent inequality on barrier penetration
(American Institute of Physics, 1990-10-15) -
Comparison of different speciation techniques to measure Zn availability in hydroponic media
(Elsevier, 2018-12)Four analytical techniques are compared: AGNES (Absence of Gradients and Nernstian Equilibrium Stripping), LASV (Anodic Stripping Voltammetry with Linear stripping), DGT (Diffusive Gradients in Thin films) and PIM (Polymer ... -
Comparison of volatile profile and sensory analysis of 'Golden Reinders' apples after the application of a cold air period after ultralow oxygen (ULO) storage
(American Chemical Society, 2011)All efforts to improve fruit quality are rewarded when consumers are satisfied after tasting the fruit. Apples are often stored under controlled atmosphere conditions to preserve them over time, but this frequently results ... -
Competition effects in cation binding to humic acid: conditional affinity spectra for fixed total metal concentration conditions
(Elsevier, 2010)Information on the Pb and Cd binding to a purified Aldrich humic acid (HA) is obtained from the influence of different fixed total metal concentrations on the acid-base titrations of this ligand. NICA (Non-Ideal Competitive ... -
Competitive Cd2+/H+ complexation to polyacrylic acid described by the stepwise and intrinsic stability constants
(American Chemical Society, 2008)Stepwise constants can be used to describe competitive proton and metal binding to macromolecules with a large number of sites. With the aim of accessing information on the microscopic binding model, we report an expression ... -
Competitive Ion Complexation to Polyelectrolytes: Determination of the Stepwise Stability Constants. The Ca2+/H+/Polyacrylate System
(American Chemical Society, 2007)This work presents a new methodology aimed at obtaining the stepwise stability constants corresponding to the binding of ions (or other small molecules) to macromolecular ligands having a large number of sites. For complexing ... -
Complexation to macromolecules with a large number of sites
(American Institute of Physics, 1999)This paper presents an approach based on the saddle-point approximation to study the equilibrium interactions between small molecules and macromolecules with a large number of sites. For this case, the application of the ... -
Compositional, structural and functional cuticle analysis of Prunus laurocerasus L. sheds light on cuticular barrier plasticity
(Elsevier, 2020-11-24)Barrier properties of the hydrophobic plant cuticle depend on its physicochemical composition. The cuticular compounds vary considerably among plant species but also among organs and tissues of the same plant and throughout ... -
Comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry to assess the presence of α,α-trehalose and other disaccharides in apple and peach
(John Wiley & Sons, 2015)Introduction Carbohydrates are important constituents in fruits. Among the carbohydrates, disaccharides have rarely been studied in apple and peach. Indeed, the abiotic stress biomarker and preservation agent α,α-trehalose ...