JBCS

Representation of a Raman imaging experiment: the spectral array of data and the univariate/multivariate data treatment for the generation of chemical images.

The symbiotic relation between vibrational spectroscopy and chemometrics in forensic chemistry contexts.

Piper divaricatum plants propagated by cuttings and cell tissue had the same volatile profile, phenolic content and similar antioxidant activity.

Silver(I) and bismuth(III) complexes with secnidazole-derived ligands show anti anaerobic bacteria activity. Silver(I) complexes exhibit antifungal effects.

Two-dimensional on-flow zonal affinity-based chromatography assay for nucleoside diphosphate kinase B.

Chitosan was modified by converting its amino group at C-2 into a pyridinium ring, for the first time, via Zincke reaction.

Norharman was identified and quantified in Passiflora edulis rinds by ultra-fast liquid chromatography coupled to tandem mass spectrometry (UFLC-MS/MS) and a stir bar sorptive extraction with a copolymer of polydimethylsiloxane and polyethylene glycol as stationary phase and high performance liquid chromatography with fluorescence detection (SBSE(EG-Silicone)-HPLC-Flu) method.

A critical evaluation of digestion methods for polymeric parts of waste of electrical and electronic equipment was carried out for further determination of halogens.

Development of electrochemical sensor using magnetic nanoparticles coated with molecularly imprinted polymer (MIP) for selective and sensible detection of estradiol valerate in different matrices.

Carbon dots (CDs) were prepared by a one-step hydrothermal method and were employed for determination of quercetin in teas and beers. The fluorescence quenching of CDs was proportional to the concentration of quercetin.

Monte Carlo simulation explains adsorption of furan, pyrrole, and thiophene on hydroxyapatite.

Green recovery of bismuth from fusible plugs of gas cylinders was performed with three consecutive extractions using L35 + NH₄NO₃ + H₂O aqueous two-phase system, without any extractant. Bismuth was obtained with high purity (94.7%), resulting in the recovery of the 38.5 g of bismuth per 1.00 kg of fusible plug.

Clomazone exhibits leaching potential and could contaminate deep layers of soil profile and groundwater. Leaching of the herbicide was evaluated in authentic soil and in soil that received incorporation of biochar. The percolation of clomazone through the soil layers was evaluated by a validated chromatographic method and its bioavailability by a greenhouse assay.

The concentrations of Al, Ca, Cd, Cr, Cu, Fe, Hg, K, Mg, Na and Zn in chicken breast samples were determined by microwave induced plasma optical emission spectrometry (MIP-OES).

Antileishmanial Croton species and main compounds (1,8-cineole and spathulenol) showed high affinity for the catalytic site of the enzyme Leishmania infantum trypanothione reductase.

The synthesis and characterization of the compounds [Fe(H₂pcpa)₂(H₂O)₂] (1), {[Mn(Hpcpa)(H₂O)₃]1/2H₂O}_n (2), {[Zn(Hpcpa)(H₂O)₃]1/2H₂O}_n (3) and [Cu₂(Hpcpa)₂(bipy)₂]8H₂O (4) [H₃pcpa = N-(4-carboxyphenyl)oxamic acid; bipy = 2,2'-bipyridine] together with the magnetic study of 1, 2 and 4.

The influence of light quality and the chemical elicitors salicylic acid and silver nitrate on the rosmarinic acid content and growth parameters of Hyptis pectinata.

Electrochemical data were obtained, in aprotic media, regarding reduction mechanism, reactivity with oxygen and analysis of the electrogenerated intermediates. Together with computational studies, data were useful in explaining the reactivity/biological activity of halogenated and nitrated pterocarpanquinones.

Superparamagnetic nanoparticles functionalized with carboxylate-substituted pillar[5]arenes for chemo-hyperthermia therapy have been developed.

D. vandellianum afforded the new rearranged limonoid dictyolomin (1); S. excelsa the new cycloheptanyl ring C with carbonate, sohnreyolide (2).

Functionalization of multiwalled carbon nanotubes (MWCNTs) with better structural quality was achieved by means of a more environmentally friendly process. Ultrasonic cavitation in lower liquid volume provided an enhanced preservation of MWCNT aspect ratio without compromising the functionalization extent.

Graphene oxide was silanized with (3-aminopropyl) triethoxysilane (APTES) using mild conditions. The resulting material was surface-modified, with the inclusion of amine and silanol groups.