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Mostrando ítems 11-20 de 27
Artículo
Quick Analysis of Organic Amendments via Portable X-ray Fluorescence Spectrometry
(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 ...
Artículo
Effect of Counter-ions on Electromembrane Extraction of Non- steroidal Antiinflammatory Drugs
(Elsevier, 2019)
The paper describes a comprehensive study of the importance of cations to improve the efficiency and mass transfer in the electromembrane extraction for the determination of non-steroidal antiinflammatory. The procedure ...
Artículo
Competence Assessment: a Measurement System for the Subject “Applied Analytical Chemistry” of the Pharmacy Degree
(Universidad Nacional Autónoma de México, 2019)
The current university environment is characterised by the implementation of an education system focused on competence-based learning. The present study has concentrated on the subject Applied Analytical Chemistry of the ...
Artículo
Potential of Cooperage Byproducts Rich in Ellagitannins to Improve the Antioxidant Activity and Color Expression of Red Wine Anthocyanins
(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 ...
Artículo
Una anotación sobre el método de Kjeldahl
(Real Academia Nacional de Farmacia, 2019)
Este trabajo constituye una anotación sobre el método de Kjeldahl destacando su importancia, las etapas de que consta, incluyendo en la de valoración la determinación iodométrica del punto final, haciendo mención asimismo ...
Artículo
Simultaneous determination of dietary isoprenoids (carotenoids, chlorophylls and tocopherols) in human faeces by Rapid Resolution Liquid Chromatography
(Elsevier, 2019-01)
An analytical method was validated for the quantitative determination of isoprenoids compounds in faecal samples, based on liquid-liquid extraction from a small aliquot (0.3-0.5 g of sample) and subsequent analysis by Rapid ...
Artículo
La Farmacia en la Sección de Químicas de la Real Academia de Ciencias de Francia (1666-1793)
(Real Academia Nacional de Farmacia, 2019)
Se consideran algunos aspectos de la relación entre química y farmacia en la Real Academia de Ciencias de Francia (1666-1793). Los farmacéuticos han sido elementos activos en la creación, funcionamiento y gestión de ...
Artículo
Characterization of different ozonized sunflower oils I. Chemical changes during ozonization
(Consejo Superior de Investigaciones Científicas, CSIC: Instituto de la Grasa, 2019)
Vegetable oils are usually rich in unsaturated fatty acids which are susceptible to oxidation. The oxidation of vegetable oils has been one of the most widely studied fields within lipid chemistry, because it alters their ...
Artículo
Comparative Study of Red Berry Pomaces (Blueberry, Red Raspberry, Red Currant and Blackberry) as Source of Antioxidants and Pigments
(Springer Nature, 2019)
Anthocyanins are phenolic compounds with important technological applications due to its bioactive and color properties. In this study, pomaces from four red berries (blueberries, red raspberries, red currants and blackberries) ...
Artículo
Physicochemical Properties, Colour, Chemical Composition, and Antioxidant Activity of Spanish Quercus Honeydew Honeys
(Springer, 2019)
The emergent market for honeydew honeys in Europe prompt to increasing requirements of consumers and honey industry for the characterisation of this type of honey. The aim of this study was to characterise 59 samples of ...