Artículos (Química Analítica)
Recent Submissions
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Porous Titanium Cylinders Obtained by the Freeze-Casting Technique: Influence of Process Parameters on Porosity and Mechanical Behavior [Article]
(MDPI, 2020)The discrepancy between the stiffness of commercially pure titanium and cortical bone tissue compromises its success as a biomaterial. The use of porous titanium has been widely studied, however, it is still challengi ...
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Differentiation Between Ripening Stages of Iberian Dry-Cured Ham According to the Free Amino Acids Content [Article]
(MDPI, 2020)In this paper, the differentiation of three ripening stages, postsalting, drying, and cellar, of Iberian dry-cured ham has been carried out according to their free amino acids contents. Eighteen L-amino acids, alanine, ...
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Quick Analysis of Organic Amendments via Portable X-ray Fluorescence Spectrometry [Article]
(MDPI, 2019)The determination of heavy metals in soils and organic amendments, such as compost, manure, biofertilizer, and sludge, generally involves the digestion of samples with aqua regia, and the determination of those in the ...
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Potential of Cooperage Byproducts Rich in Ellagitannins to Improve the Antioxidant Activity and Color Expression of Red Wine Anthocyanins [Article]
(MDPI, 2019)Cooperage byproducts are an important source of phenolic compounds that could be used for wine technology applications. The effects of the addition of two types of oak wood shavings (American, AOW, and Ukrainian, UOW) on ...
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Assessment of Virgin Olive Oil Adulteration by a Rapid Luminescent Method [Article]
(MDPI, 2019)The adulteration of virgin olive oil with hazelnut oil is a common fraud in the food industry, which makes mandatory the development of accurate methods to guarantee the authenticity and traceability of virgin olive oil. ...
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Predicting extra virgin olive oil freshness during storage by fluorescence spectroscopy [Article]
(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 ...
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François-Antoine-Henri Descroizilles (1781-1825), démonstrateur royal de chimie, apothecary, inventor and industrial chemist: the father of titrimetric analysis. Part I [Article]
(Real Academia Nacional de Farmacia, 2018)In this contribution the life and work of François-Antoine-Henry Descroizilles is reviewed. He is recognized as a multifaceted person, and as a skilled and wise chemist by eminent scientists of his time. Descroizilles ...
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François-Antoine-Henri Descroizilles (1781-1825), démonstrateur royal de chimie, apothecary, inventor and industrial chemist: the father of titrimetric analysis. Part II [Article]
(Real Academia Nacional de Farmacia, 2018)In the first part of this contribution, the boundary conditions of the new bleaching method proposed by Berthollet after the discovery of chlorine (oxygenated muriatic acid) by Scheele have been addressed. This second ...
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Simultaneous Determination of Pesticides in Fruits by Using Second-Order Fluorescence Data Resolved by Unfolded Partial Least-Squares Coupled to Residual Bilinearization [Article]
(Hindawi, 2018-10-16)In the present work, a chemometric-assisted spectrofluorimetric method has been developed for the simultaneous determination of natural fluorescent pesticides, carbaryl, carbendazim, and thiabendazole, in orange and banana. ...
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Wine Lees as a Source of Antioxidant Compounds [Article]
(MDPI, 2019)The winemaking industry produces large amount of byproducts, including grape pomace, stalks, and lees. Wine lees are a natural source of phenolic compounds, which have important antioxidant and biological properties. Due ...
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Analytical pyrolysis evidences the presence of granaticins in the violet stains of a Roman tomb [Article]
(Elsevier, 2016)The walls of the Circular Mausoleum tomb (Roman Necropolis of Carmona, Spain) exhibit an important number of violet stains of unknown origin. Analytical pyrolysis detected in the tomb walls granaticin A, a violet pigment ...
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Hepatic proteome analysis of Atlantic salmon (Salmo salar) after exposure to environmental concentrations of human pharmaceuticals [Article]
(Molecular & Cellular Proteomics, 2015)Pharmaceuticals are pseudopersistent aquatic pollutants with unknown effects at environmentally relevant concentrations. Atlantic salmon (Salmo salar) were exposed to Acetaminophen: 54.77 ± 34.67; Atenolol: 11.08 ± 7.98, ...
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La problemática del ajuste en la etapa de la calibración [Article]
(Universidad del Tolima, 2006)En este trabajo se pasa revista a los factores que influyen en el proceso de calibrado en el análisis químico. Los postulados en los que se basa la aplicación del método de los mínimos cuadrados, la bondad del ajuste del ...
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Análisis tipo de una sal marina procedente del Mediterráneo [Article]
(Ediciones y Publicaciones Alimentarias, EYPASA, 2005)En este trabajo se describe el análisis tipo de una sal marina procedente del Mediterráneo (provincia de Alicante)
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Capillary Gas Chromatography-Mass Spectromety (CGC-MS) Analysis and Antioxidant Activities of Phenolic and Components of Guarana and Derivatives [Article]
(Bentham Open, 2012)The GC-MS analysis of phenolic compounds present in guarana (Paullinia cupana), an important product of the Amazonian forest consumed in supplements or in soft drinks has been the subject of study. The therapeutic properties ...
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Desarrollo y validación de un método analítico para la cuantificación de Ranitidina en plasma por Cromatografía Líquida de Alta Resolución (HPLC) [Article]
(Universidad de Antioquia, 2001)A reversed phase high - liquid chromatography method for quantifying ranitidine using nizatidine like a internal standard has been developed. The method first involves a purification step of samples using a solid - phase ...
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Frutos tropicais silvestres e polpas de frutas congeladas: atividade antioxidante, polifenóis e antocianinas [Article]
(Universidade Federal de Santa Maria, 2006)Os sucos de frutas tropicais conquistam cada vez mais o mercado consumidor, sendo o Brasil um dos principais produtores. Existe grande diversidade de produtos derivados de frutos e constante inserção de novos produtos no ...
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Fitting Nonlinear Calibration Curves: No Models Perfect [Article]
(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- ...
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Aplicación de diversos métodos químicos para determinar actividad antioxidante en pulpa de frutos [Article]
(Sociedade Brasileira de Ciência e Tecnologia de Alimentos, 2005)APLICAÇÃO DE DIVERSOS MÉTODOS QUÍMICOS PARA DETERMINAR ATIVIDADE ANTIOXIDANTE EM POLPA DE FRUTAS. Considerado um dos principais paises produtores de sucos de frutas, o Brasil é o terceiro maior produtor de frutas tropicais. ...
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Formulation of dynamic buffer capacity for phytic acid [Article]
(American Association for Science and Tecnology, 2015)The general formulation of dynamic buffer capacity for polyprotic acids and bases (and polyprotic acid and base salts) has been derived. Polyprotic acids show buffer capacity over a broad range of pH values, according to ...