Browsing Articles publicats (Química) by Title
Now showing items 34-53 of 214
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Caracterización de la actividad antialimentaria de extractos de frutos y semillas de Melia azedarach L. y de Azadirachta indica A. sobre larvas del lepidópteroSesamia nonagrioides Lef.
(Espanya. Ministerio de Medio Ambiente y Medio Rural y Marino, 1998)Los extractos metanólicos de semillas y de frutos de Melia azedarach han mostrado una buena actividad antialimentaria frente a larvas de 2º estadio del lepidóptero noctuido Sesamia nonagrioides, plaga del maíz. Los productos ... -
Cell wall disassembly and post-harvest deterioration of ‘sweetheart’ sweet cherry fruit: involvement of enzymic and non-enzymic factors
(Hikari, 2013)Sweet cherries are very perishable, owing to rapid softening rates associated to significant deterioration of fruit. Ripening-related firmness loss is generally attributed to enzyme-catalysed modifications in cell wall ... -
Cell wall metabolism in cold-stored 'Somerset' sweet cherry fruit
(International Society for Horticultural Science (ISHS), 2017)'Somerset' is a dark-red, sweet cherry (Prunus avium L.) cultivar displaying remarkable firmness levels, with concomitantly longer shelf-life potential in comparison to other varieties. It is generally accepted that fruit ... -
Changes in biosynthesis of aroma volatile compounds during on-tree maturation of ‘Pink Lady®’ apples
(Elsevier, 2008)The production of aroma volatile compounds and standard quality attributes, in addition to lipoxygenase (LOX), hydroperoxide lyase (HPL), pyruvate decarboxylase (PDC), alcohol dehydrogenase (ADH) and alcohol o-acyltransferase ... -
Changes in quality and maturity of ‘Duke’ and ‘Brigitta’ blueberries during fruit development: postharvest implications
(International Society for Horticultural Science (ISHS), 2018)Fresh Chilean blueberries take in average 20-50 days to reach overseas markets, so a better knowledge of their postharvest behavior would help maintaining their quality for longer periods. Quality of highbush blueberries ... -
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 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 ...