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Mostrando ítems 1-10 de 92
Artículo
Comparative Study of Phenolic Profile, Antioxidant Capacity, and Color-composition Relation of Roselle Cultivars with Contrasting Pigmentation
(Springer Nature, 2016)
Roselle is a plant that accumulates anthocyanins significantly, hence its importance as food coloring and as a source of antioxidant compounds for human health. This study was aimed to determine phenolic composition and ...
Tesis Doctoral
Microextracción en fase Líquida usando membranas líquidas soportadas sobre fibras huecas (HF-LPME, Hollow Fiber Based Liquid Phase Microextraction) como procedimiento de preconcentración y limpieza para la determinación de fármacos en matrices biológicas
(2012)
El objetivo de esta Tesis Doctoral es el estudio y puesta a punto de diferentes metodologías de microextracción que implican el uso de membranas líquidas soportadas (supported liquid membrane, SLM) sobre fibras huecas de ...
Artículo
Proximate chemical composition and content of biologically active components in leaves of two quinoa cultivars (Salcedo and Altiplano) produced in Peru
(Academic Journals Inc., 2016)
Objective: The purpose of the presented study was to describe the proximate chemical composition and content of biologically active components in leaves of two quinoa cultivars (Salcedo and Altiplano) produced in Peru. ...
Artículo
Effect of clays and metal containers in retaining Sm3+ and ZrO2+ and the process of reversibility
(Walter de Gruyter, 2014)
Knowledge and understanding about radionuclides retention processes on the materials composing the engineered barrier (clay mineral and metallic container waste) are required to ensure the safety and the long-term performance ...
Artículo
Determination of soluble ultra-trace metals and metalloids in rainwater and atmospheric deposition fluxes: A 2-year survey and assessment
(Elsevier, 2013)
The present work investigates the relationships between composition of rainwater and dry deposition fluxes by trace metals and metalloids. A modification in automatic “wet-only” and “dry-only” samplers was applied, which ...
Artículo
Fitting Nonlinear Calibration Curves: No Models Perfect
(Scientific Research Publishing, 2017)
The study of the calibration of a series of compounds of environmental concern (six perfluoroalkyl compounds (perfluorooctane sulfonic acid and five perfluoroalkyl carboxylic acids), three preservatives (methyl-, ethyl- ...
Artículo
Study of Zalema Grape Pomace: Phenolic Composition and Biological Effects in Caenorhabditis Elegans
(American Chemical Society, 2013)
The phenolic composition of the extractable fraction of Zalema grape pomace has been analyzed by HPLC-DAD-MS and consisted of mainly flavanols and flavonols (122.75 and 23.11 mg/100 g dry pomace, respectively). The antioxidant ...
Artículo
A neuroimaging study of pleasant and unpleasant olfactory perceptions of virgin olive oil
(CSIC, 2016)
Functional magnetic resonance imaging (fMRI) has been used to collect information from neurons that receive direct input from olfactory bulbs when subjects smell virgin olive oil. The pleasant aroma of three extra ...
Artículo
Predicting extra virgin olive oil freshness during storage by fluorescence spectroscopy
(CSIC, 2017)
Virgin olive oil quality relates to flavor and unique health benefits. Some of these properties are at the most desirable level when the oil is just extracted, since it is not a product that improves with age. On ...
Artículo
Lichens as biomonitors for the determination of polycyclic aromatic hydrocarbons (PAHs) in Caracas Valley, Venezuela
(Taylor & Francis, 2011)
Biomonitoring of PAH air pollution using lichens was carried out. Sixteen PAHs were studied in 11 locations along the valley of Caracas (Venezuela). The results of this work indicate that 14 of the 16 analysed PAHs were ...