A5067892554- NMR spectroscopy and applications
- Advanced NMR Techniques and Applications
- Cultural Heritage Materials Analysis
- Advanced MRI Techniques and Applications
- Spectroscopy and Chemometric Analyses
- Nuclear Physics and Applications
- Surfactants and Colloidal Systems
- Hydrogels: synthesis, properties, applications
- Metabolomics and Mass Spectrometry Studies
- Advanced Cellulose Research Studies
- Geophysical Methods and Applications
- Building materials and conservation
- Polymer Nanocomposites and Properties
- Chemical Synthesis and Characterization
- Polysaccharides and Plant Cell Walls
- Fuel Cells and Related Materials
- Edible Oils Quality and Analysis
- Advanced Battery Materials and Technologies
- Polysaccharides Composition and Applications
- Organometallic Complex Synthesis and Catalysis
- Advanced Polymer Synthesis and Characterization
- Material Dynamics and Properties
- Liquid Crystal Research Advancements
- Analytical Chemistry and Chromatography
- Advanced Chemical Sensor Technologies
Institute for Biological Systems
2019-2020
Istituto di Biologia e Biotecnologia Agraria
2019-2020
Institute of Structure of Matter
2000-2020
Istituto di Metodologie Chimiche
2010-2019
National Research Council
2003-2019
Institute of Inorganic Methodologies and Plasmas
2010-2016
University of Salerno
2015
National Academies of Sciences, Engineering, and Medicine
2015
Centro Ricerche FIAT
2015
Ospedale Misericordia - Grosseto
2015
Lignin was isolated from wood wastes comprising Iroko sawdust (IR) and mixed Norway spruce (IRNS), furnished by a local houses producer. The respective acidolysis lignin fractions were structurally characterized using pyrolysis (Py)-GCMS, two-dimensional heteronuclear single quantum correlation nuclear magnetic resonance (2D HSQC NMR), Fourier-transform infrared FTIR ultraviolet-visible (UV-VIS) spectroscopies, size exclusion chromatography, standard wet-chemistry methods for Klason...
Diffusion-ordered NMR spectroscopy (DOSY) experiments have been carried out on dilute aqueous solutions of uncharged saccharide systems and, in particular, six well characterized pullulan fractions different molecular weights. The values diffusion coefficients and hydrodynamic radii determined for the are good agreement with results obtained other methodologies such as light scattering. Fitting data a function weight allows determination calibration curve that can be applied to wide range...
The chemical composition of the inflorescences from four Cannabis sativa L. monoecious cultivars (Ferimon, Uso-31, Felina 32 and Fedora 17), recently introduced in Lazio Region, was monitored over season June to September giving indications on their sensorial, pharmaceutical/nutraceutical proprieties. Both untargeted (NMR) targeted (GC/MS, UHPLC, HPLC-PDA/FD spectrophotometry) analyses were carried out identify quantify compounds different classes (sugars, organic acids, amino cannabinoids,...
A (1)H NMR analytical protocol for the detection of refined hazelnut oils in admixtures with olive is reported according to ISO format. The main purpose this research activity suggest a novel methodology easily usable by operators basic knowledge spectroscopy. protocol, developed on 92 oil samples different origins within European MEDEO project, based measurements combined suitable statistical analysis. It was using 600 MHz instrument and tested two independent laboratories spectrometers,...
Self-assembled nanohydrogels based on hydrophobically modified polysaccharides have been extensively studied due to their wide potential applications as drug delivery systems. In the present study, we developed and characterized self-assembling sonicated gellan gum chains. Prednisolone (Pred), a poorly water soluble anti-inflammatory drug, was chemically conjugated carboxylic groups of (Ge–Pred) it hydrophobic moiety responsible for process. Ge–Pred by proton nuclear magnetic resonance...
Simple addition of zirconyl propionate to phosphoric acid in alcoholic media surprisingly led the formation, few minutes, transparent gels containing solvent intercalated zirconium phosphate (ZrP) nanoparticles with hexagonal shape and a planar size about 40 nm. With help elemental analysis, inductively coupled plasma-optical emission spectrometry (ICP-OES), 31P magic angle spinning (MAS) NMR, nanoparticle composition was formulated as Zr(R)w(HPO4)x(H2PO4)y, which R can be an hydroxyl or...
An NMR analytical protocol is proposed to characterize saffron samples of different geographical origin (Greece, Spain, Hungary, Turkey and Italy). A microwave-assisted extraction procedure was developed obtain a comparable recovery metabolites with respect the ISO specifications, reducing solvent volume time needed. Metabolite profiles geographically extracts were compared showing significant differences in content some metabolites.
Low-field 1H NMR relaxometry is an important tool used to investigate on the most abundant components of intact foodstuffs based relaxation parameters and amplitude signals. In particular, information water compartments, diffusion movement can be obtained by detecting proton signals prevalently ascribable H2O contained in foodstuffs. The main advantage this technique that it does not require any pretreatment sample once developed, standard protocols rapid measurements easily transferred...
Original data are provided demonstrating that the title condensations simple and versatile methods for synthesis of hydrogels based on a variety carboxylated polysaccharides. In this work, biopolymers considered sodium hyaluronate alginate. Nonnatural polysaccharides were commercial (carboxymethyl)cellulose or obtained by carboxymethylation selective oxidation primary alcohol groups scleroglucan dextran. Hydrogels prepared via Passerini reaction transparent, alkali labile materials whereas...
A pulsed low-resolution 1H NMR relaxation study at 75 MHz was performed on chitosan and two lightly cross-linked networks with a different degree of cross-link amount added water. The spin−lattice time T1, the spin−spin T2, free induction decay (FID) were measured in 200−320 K temperature range. An aperiodic saturation recovery sequence applied for measuring while CPMG used T2. full deconvolution FIDs allows plethora information. Lightly chains form super adsorbing hydrogels. water these...
Hydrophilic networks based on functionalized hyaluronic acid and partially acetylated chitosan, respectively, have been obtained. In the case of (HA), primary amino functionalities introduced along polysaccharide chains. The ensuing derivatives, i.e., HA-lysine (HA-K), HA-diamino pentane (HA-DAP), HA-glycine-lysine (HA-GK), characterized by high field NMR spectroscopy. 2D-DOSY experiments allowed us to optimize purification procedure. Chitosan was made soluble in water partial acetylation....
The synthesis of potassium 3-sulfopropyl methacrylate (SPMA) homopolymers and amphiphilic block copolymers with methyl (MMA) by ATRP in water/DMF mixed solvent at 20 °C using a Cu/bipyridine catalyst halogen exchange is described. SPMA homopolymerization pure water was poorly controlled even when 200% Cu(II)Cl2 respect to Cu(I)Cl added, leading relatively high polydispersity (1.38). In water:DMF 50:50 (v/v), addition least 60% allowed obtain good control the polymerization. Linear kinetic...
A versatile atom transfer radical polymerization (ATRP) method for polysaccharide grafting in homogeneous mild conditions without using protecting group chemistry is presented. Water/DMF mixtures with different compositions were used as the solvent. The "grafting-from" approach was order to prepare suitable pullulan and dextran ATRP macroinitiators a well controlled degree of functionalization. Methacrylate acrylamide monomers grafted obtaining good control over number, molecular weight...
Abstract Zirconium phosphate (ZrP) was incorporated in preformed Nafion 117 membranes by exchange of the ionomer protons with zirconium cationic species and subsequent treatment phosphoric acid. Reiteration these treatments under same reaction conditions allowed to obtain filler loading range 20–40 wt.‐%. 31 P MAS NMR investigations showed that is mainly α‐ZrP fraction monohydrogen groups α‐type environment increases number treatments. All were characterised stress–strain mechanical tests at...