JBCS

The work reports the functionalization of peptide derivatives achieved through carbodiimide mediated intramolecular cyclization and an organocatalytic azlactone ring opening reactions.

A multi-pumping flow system with a fluidized bed column is proposed to determination of the soil capacity in adsorb phosphate.

An efficient functionalization method of multiwalled carbon nanotubes (MWCNTs) was developed. Length reduction and degree of functionalization were statistically determined and can be tailored for different applications.

Weak electrolytes acted in the electrical double layer of the growing nanocrystals by competing with mercapto ligands for coordination with cadmium ions.

In this work we present the development and characterization of a novel formulation of vitamin A-loaded solid lipid nanoparticles, containing Gelucire 44/14^® and cetyl alcohol, prepared using hot homogenization.

Herein we explore the immobilization of Lipozyme CaLB-L in SiO₂, its application in acylation reactions and a comparison of the selectivity with other commercial lipases.

SEM images showing the Ni films morphologies involving: ChCl:2EG (left) and ChCl:2U (right) deep eutectic solvents (DES) associated with their corrosion performance.

Main volatile organic compounds (VOCs) emitted by I. paraguariensis after the herbivory of Hedypathes betulinus and Thelosia camina.

Laccase was successfully immobilized on hybrid nanocomposite, producing a selective biosensor for the quantification of 4-chlorophenol.

Microbiological and toxic elements (Pb and Cd) analysis were successfully performed to evaluate food quality from a highly contaminated city in Bahia State, Brazil.

Plumeran indole alkaloid (PIA) interacts strongly with bovine serum albumin (BSA). Site I is the hottest binding site for PIA and hydrogen bonding as well as hydrophobic interactions are the main intermolecular forces in the association BSA:PIA.

A simple and rapid high performance liquid chromatography coupled with diode array detector (HPLC-DAD) method was firstly developed for simultaneous quantification of three chemical types of bioactive components including an alkaloid, six nucleosides and four phenylpropanoids in Radix Isatidis and its relevant pharmaceutical dosage forms.

A new ultrasound assisted extraction combined with dispersive liquid-liquid microextraction with solidification of floating organic drop (UAE-DLLME-SFO) method has been developed for the preconcentration of traces of triazine herbicides from fruit and vegetables. In UAE-DLLME-SFO, sonication for extraction of compounds from semisolid and solid matrices and a low-density and less-toxic solvent were used to overcome the disadvantages of conventional DLLME.

The methodology of synthetic magnetic iron oxides (MIO), gelation and calcination steps. MIO in the presence of a permanent magnetic field.

Multicomponent ultrasound assisted synthesis of thiomethyl-pyrimidinones with vascular activity.

Gold nanoparticles film shows a potential applicability as passive sampler for indoor monitoring of gaseous elemental mercury (GEM).

Four new alkaloids, named Brazoides A-D, together with three known compounds were isolated from Justicia gendarussa Burm. F. (Acanthaceae).

This paper is part of the PubliSBQ Special Issue in honor of the late Prof Angelo da Cunha Pinto.

Method using Fourier transform infrared spectroscopy (FTIR) and partial least squares - discriminant analysis (PLS-DA) to discriminate original and counterfeit samples of Durateston^®.

Overproduction of ALA in SAME-treated rats impairs redox balance and mimics the liver mitochondrial damage long detected in liver biopsies of porphyric individuals.

This paper is part of the PubliSBQ Special Issue in honor of the late Prof Angelo da Cunha Pinto.

The results have demonstrate that is possible to detect and quantify the adulteration of coffee by corn, even at low concentrations (less than 1% m/m), employing differential scanning calorimetry and Fourier transform infrared spectroscopy coupled with chemometric analysis.

Layered nickel/zinc double hydroxide salt was intercalated with acetate anions, which were replaced by molybdate anions. After dehydration at 250 °C, the obtained material was investigated as solid catalysts in the methyl transesterification reaction of soybean oil. Conversions up 65% were obtained with 5% of reusable catalyst in relation to the mass of oil, methanol/soybean oil molar ratio of 35:1, temperature of 120 °C and 4 h of reaction.

Magnetic resonance image of eastern oyster and the biochemical schematic relating metabolites to biochemical pathways.

A direct and simple ion chromatography (IC) method with UV detection for the determination of NNG in samples of technical glyphosate, below the maximum concentration determined by the Brazilian regulation.

Chemical structures of the compounds isolated from Lippia gracilis Schauer.

Binary mixtures presented synergistic effect for drug release.