0000000000372736

AUTHOR

Carlo Siciliano

showing 2 related works from this author

Study of the coordination of ortho-tyrosine and trans-4-hydroxyproline with aluminum(III) and iron(III)

2018

Abstract The coordination of amino acids ortho-tyrosine (o-Tyr, 1) and trans-4-hydroxyproline (HPro, 2) with the biologically important trivalent metal ions Al(III) and Fe(III) in aqueous solution was investigated by 1H and 13C high resolution NMR, Laser Desorption Mass Spectrometry (LD-MS), and MS/MS experiments. Potentiometric measurements were also carried out in 0.16 M NaCl, 37 °C, by varying the pH between 2.0 and 3.5. NMR spectra recorded on aqueous solutions of amino acids 1 or 2 in the presence of the appropriate trivalent metal chloride suggested that binding of Al(III) and Fe(III) involved the COOH and NH2 functional groups of ligands, while their phenolic and alcoholic groups whi…

Materials Chemistry2506 Metals and AlloysAtomic and Molecular Physics and OpticMetal ions in aqueous solutionPotentiometric titrationCondensed Matter Physic010402 general chemistry01 natural sciencesMetalMaterials ChemistrySettore CHIM/01 - Chimica AnaliticaPhysical and Theoretical ChemistrySpectroscopySpectroscopychemistry.chemical_classificationAqueous solution010405 organic chemistryChemistryElectronic Optical and Magnetic MaterialCondensed Matter PhysicsAtomic and Molecular Physics and Optics0104 chemical sciencesElectronic Optical and Magnetic MaterialsAmino acidNMR spectra databasevisual_artvisual_art.visual_art_mediumStoichiometryNuclear chemistry
researchProduct

One-Pot Analysis: a New Integrated Methodology for Determination of TAG and FA Determination through LC/MS and in-silico Saponification

2017

Vegetable oils differ significantly for their lipid profile and are mainly constituted by triacylglycerols (TAGs). These are esters formed bonding glycerol to three fatty acids (FAs). To the best of our knowledge, FA and TAG profiles in oils and fats are obtained using at least two different experimental techniques. In particular, FA determination requires elaborated procedures for sample preparation and analyte derivatization. In this work, we propose a one-pot analysis able to determine both TAG and FA contents of edible oils, using experimental data obtained from a simple liquid chromatography/mass spectrometry determination of TAGs. This experimental procedure is followed by an in silic…

AnalyteMass spectrometryTriacylglycerol01 natural sciencesApplied Microbiology and BiotechnologyAnalytical Chemistrychemistry.chemical_compound0404 agricultural biotechnologyLiquid chromatography–mass spectrometryGlycerolSample preparationFood scienceSafety Risk Reliability and QualityDerivatizationChromatography010401 analytical chemistry04 agricultural and veterinary sciencesFatty acid040401 food scienceFAME0104 chemical sciencesLipid profileVegetable oilBlood chemistrychemistryIn silico saponificationSafety ResearchSaponificationFood ScienceFood Analytical Methods
researchProduct