JBCS

A sample preparation procedure using tetramethylammonium hydroxide (TMAH) and nitric acid (HNO3) to determine inorganic elements in crustaceans by microwave-induced plasma optical emission spectrometry (MIP OES) was successfully employed.

Scope of organochalcogenated compounds as antimicrobials. Some of them showed higher activities than control.

Synthesis and cytotoxic activity of carbohydrate-based benzo[f]indole-4,9-diones and 2-amino-1,4-naphthoquinones against eight human cancer cell lines.

New piperine derivatives were synthesized via an S_N2 nucleophilic substitution reaction between arylacyl bromide and potassium piperate. In addition, computational and antifungal studies were carried out.

A new solid-state method to prepare heterogeneous SnHPW₁₂O₄₀ (SnHPW) catalysts showed great results in the esterification of lactic acid with several alcohols.

Two stage partial least squares-discriminant analysis (PLS-DA) modeling of attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectra for fast, direct and accurate screening analysis of synthetic drugs in forensic laboratories.

High-speed countercurrent chromatography (HSCCC) is being used for the first time to separate rutin ester derivatives with lipophilic chains of different sizes produced by biocatalytic pathway, resulting in products with high purity identified by mass fragmentation and nuclear magnetic resonance (NMR).

Evaluation of the characteristics of the different fractions of organic matter from tropical soils in order to better understand the leached organic matter.

Liquid deep eutectic solvents at room temperature were prepared from benzyltriethylammonium chloride and mono or dicarboxylic acids. The physical properties were determined, and a structure-property relationship was established.

A novel and green method for rutin and quercetin secondary metabolites extraction from aerial parts of Bidens pilosa Linné plant was developed. Quantification of the secondary metabolites was carried out by high performance liquid chromatography-ultraviolet/mass spectrometry (HPLC-UV/MS) and antibacterial capacity evaluation of the extract was done by measuring the inhibition diameter zone of three Gram-positive bacteria.

Hydrophobic deep eutectic solvents (HDES) used as an environmentally friendly alternative for liquid-phase micro-extraction of food dyes.

A series of 1,2,3-triazole hydroxybenzophenone derivatives display photoprotective, antioxidant, and anticancer activities.

Evaluation of glutathione-coated CdTe (GSH-CdTe) use as photoluminescent probe for direct detection of histidine.

Single-layered microfluidic devices made by paint spraying method with great barrier resistance have been integrated with the colorimetric assays of either single or multiple analytes.

Magnetite/silica-niobia xerogel with both composition and porosity previously planned was used to modify carbon paste electrode to be applied as a sensitive and selective electrode for p-nitrophenol determination.

Analysis of the presence and concentration of 10 µm particulate matter (PM₁₀) adsorbed atmospheric polycyclic aromatic hydrocarbons (PAH) generated from sugarcane crop fires.

2,3-Dihydro-1H-1,5-benzodiazepines have been synthesized from o-phenylenediamine and hydroxyacetophenone with several solvents through acid catalysis. Antifungal and antioxidant activities were more expressive for benzodiazepine containing hydroxyl group (R₂) at the para-position and R₁ equal methyl group.

Compatibility kinetic of drug-excipient is essential to product quality review inserted in the Good Manufacturing Practices.

Coumarin-linked amino acids via triazole display acetylcholinesterase inhibition supported by physicochemical parameters.

Oxygen reduction reaction (ORR) activity of perovskite oxides investigated by rotating disk electrode (RDE) and scanning electrochemical microscopy (SECM).

PhotoMetrix UVC is a free app proposed for both operation of a universal serial bus (USB) video camera and image processing for point-of-use analysis.

Relationship among water, sediments, mollusks and humic substances in the metal distribution in the Manguaba Lagoon ecosystem (Alagoas State, Brazil).