Enginyeria Química i Química Analítica: Recent submissions
Now showing items 121-140 of 790
Analytical methods for exploring nutraceuticals based on phenolic acids and polyphenols
Phenolic compounds such as phenolic acids, flavonoids, and stilbenes comprise an enormous family of bioactive molecules with a range of positive properties, including antioxidant, antimicrobial or anti-inflammatory effects. ...
Green approach for micropollutants removal: Study of constructed wetlands as pretreatment of solar photo-Fenton catalyzed by organic fertilizers
This study proposes a combination of vertical-flow constructed wetlands and solar photo-Fenton catalyzed by Fe-EDTA/DTPA as a greener approach to enhance micropollutant removal from simulated polluted water. In this research, ...
Study of nanoemulsions using carvacrol/MCT-(Oleic acid-potassium oleate)/ Tween 80 ®- water system by low energy method
Carvacrol is studied in different fields due to its microbial and antioxidant properties. Its use is limited because of the water insolubility and its strong taste. To overcome these problems, carvacrol has been successfully ...
Recovery of rare earth elements from acidic mine waters by integration of a selective chelating ion-exchanger and a solvent impregnated resin
A polymeric ion-exchange resin, incorporating methyl-amino-phosphonic (TP260) functionalities, and a solvent impregnated resin (SIR) incorporating tri-methylpentylphosphinic acid (TP272), were evaluated for the selective ...
A data independent acquisition all ion fragmentation mode tool for the suspect screening of natural toxins in surface water
Among natural freshwater pollutants, cyanotoxins, mycotoxins, and phytotoxins are the most important and less studied. Their identification in surface water is challenging especially cause of the lack of standards and ...
A comprehensive analytical framework integrating liquid chromatography-tandem mass spectrometry metabolomics with chemometrics for metabolite profiling of lettuce varieties and discovery of antibacterial agents
This study comprehensively characterized the metabolite profiles of six lettuce varieties and established the</p><p>correlation between the elucidated profiles and their antivirulence effects. A total of 195 metabolites ...
Assessment of arsenic bioaccessibility in raw and cooked edible mushrooms by a PBET method
The present study reports arsenic analysis in Lentinula edodes, Agaricus bisporus and Pleurotus ostreatus before and after being cooked. Furthermore, arsenic in raw and cooked mushroom was determined in the gastric and ...
Chemical characterization and anti-inflammatory and antioxidant potential of fruits of Eugenia candolleana DC
The aim of this study was to present a comprehensive evaluation of the chemical composition, anti-inflammatory and antioxidant activities of the pulp and seeds of Eugenia candolleana fruits collected at two stages of ...
Glutathione modified screen-printed carbon nanofiber electrode for the voltammetric determination of metal ions in natural samples
This work reports the development of a glutathione modified electrode via electrografting on a screen-printed carbon nanofiber substrate (GSH-SPCNFE). GSH-SPCNFE was compared to a classical screen-printed carbon electrode ...
Resolution of complex mixtures of duplex and antiparallel triplex DNA structures by capillary electrophoresis and multivariate analysis
Triplex DNA structures, which are formed by the addition of an extra strand to a target B-DNA duplex, have attracted increasing interest due to their analytical and therapeutic applications. These structures are classified ...
Simultaneous determination of Tl(I) and In(III) using a voltammetric sensor array
A sensor array consisting of a chemically modified sensor in which 4-carboxybenzo-18-crown-6 was immobilized onto a screen-printed carbon nanofiber-modified electrode (crown-6-SPCNFE) and an ex-situ antimony film deposited ...
Curcuminoid-Based Responsive Surfaces for Fluorescent BF3 Detection, a Fast and Reversible Approach
The strategic design of a novel curcuminoid (CCMoid), termed PA, containing pyrene units and a terminal carboxylic group provides the necessary tools for its efficient immobilization on surfaces and its potential use as ...
Poly(butylene terephthalate-co-5-tert-butyl isophthalate) Copolyesters: Synthesis, Characterization and Properties
A series of poly(butylene terephthalate) copolyesters containing 5-tert-butyl isophthalate units up to 50%-mole, as well as the homopolyester entirely made of these units, were prepared by polycondensation from the melt. ...
Insights into the photocatalytic ozonation over Ag2O-ZnO@g-C3N4 composite: Cooperative structure, degradation performance, and synergistic mechanisms
In this work, Ag2O and ZnO modified g-C3N4 (Ag2O-ZnO@CNx) catalysts were fabricated by a simple precipitation-reflux method and employed for visible-light-driven photocatalytic ozonation process towards oxalic acid (OA) ...
Ultra-trace analysis of cyanotoxins by liquid chromatography coupled to high-resolution mass spectrometry
The increasing frequency of episodes of harmful algal blooms of cyanobacterial origin is a risk for ecosystems and human health. The main human hazard may arise from drinking water supply and recreational water use. For ...
Proteómica shotgun para la caracterización integral de granos de quinoa: una herramienta prometedora en el campo de la inmunonutrición
Este artículo presenta una estrategia proteómica basada en la utilización de la cromatografía de líquidos acoplada a la espectrometría de masas en tándem (LC-MS/MS), en combinación con el entorno de trabajo, para caracterizar ...
Classification and authentication of paprika by UHPLC-HRMS fingerprinting and multivariate calibration methods (PCA and PLS-DA)
In this study, the feasibility of non-targeted UHPLC-HRMS fingerprints as chemical descriptors to address the classification and authentication of paprika samples was evaluated. Non-targeted UHPLC-HRMS fingerprints were ...
Metal complexation by electroanalytical techniques: hard- and soft-modelling approaches
En la investigació de la complexació de metalls mitjançant eines electroanalítiques són emprades dues aproximacions generals. La primera, anomenada de modelatge dur (hardmodelling), es basa en la formulació d'un model ...
Potential of High-Performance Liquid Chromatography with Ultraviolet Detection (HPLC-UV) Fingerprints to Assess the Geographical Production Origin and Authenticity of Honey
Honey is a widely appreciated and consumed natural product which is highly susceptible to fraudulent practices involving different sample attributes such as the botanical species or the geographical production regions, as ...
Improvement of the photo-Fenton process at natural condition of pH using organic fertilizers mixtures: Potential application to agricultural reuse of wastewater
Five organic fertilizers (DTPA, EDDHA, HEDTA, EDTA and EDDS) were studied as iron sources for photo-Fenton process at natural pH to remove micropollutants (MPs) from wastewater for its reuse in irrigation. The results ...
