JBCS

Photo thermal lens effect of gold nanoparticles (GNPs) capped with methimazole.

Five new lupeol 1,2,3-triazole derivatives were synthesized from lupeol which was isolated from Parahancornia fasciculata and were assayed for antiplasmodial and cytotoxic activity.

Optimizing the extraction of phenolic antioxidants from grape and apple pomaces from Brazil using response surface methodology.

Magnetic solid phase extraction procedure used for the determination of targeted compounds in biological samples.

A methodology to obtain 7-nitroquinoxalin-2-amine using o-phenylenediamine as starting material in a five-step procedure in good yields and high purity.

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

Ruthenium(II) complexes with the extended planar ligand [dipyrido[3,2-a:2′,3′-c]quinoxaline[2,3-b]quinoxaline)] have been synthesized and shown to be active against breast tumor cells (MDA-MB 231 and MCF-7).

Using a power of 30% and a temperature of 55 °C an increase in relative activity of 147.9% in the enzyme from soybean meal was obtained.

Addition of Cu^II or Fe^III switches OFF the probe emission, but Fe^III also induces the formation of a fluorescent coordinated compound (switch ON).

The volatile compounds differed both within and between Phloeidae species. Some compounds were sex specific, and others were characteristic of different developmental stages.

This article is part of the Special Issue BIOprospecTA-BIOTA.

Two new furanoditerpenes were obtained from Pterodon emarginatus. Methyl 6α-acetoxy-7β-hydroxyvouacapan-17β-oate (previously identified) showed leishmanicidal activity.

¹H NMR (60 and 300 MHz) and FTIR-ATR associated with chemometrics were used to quantify esterification of fatty acids with methanol.

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

The synthesis of several xanthenes based on the 1,3-dicarbonyl scaffolds lawsone and coumarin was developed using tandem three-component reactions involving the reagents ortho-hydroxybenzaldehyde, as bifunctional reagent, and an appropriate thiol. These reactions generated two series of para- and ortho-naphthoxanthenes that are structurally related to α- and β-pyranaphthoquinones and one series of coumarin-xanthene derivatives.

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

Enrichment effects with different iron species on translocation of this element, chemical composition (essential elements, proteins and Fe-proteins) and Fe bioaccessibility.

Recognition mechanism of the nanofibrous film chemosensor for Zn²⁺.

The new mini PTFE vessel was evaluated as a potential system for the preparation of biological samples and subsequent determination of metals.

The sixteen rare earth elements content in twelve types of popular flower herb teas and their infusions consumed in China was evaluated by ICP-MS.

The stability of biodiesel:diesel blends were studied in actual Brazilian storage conditions. The degradation was quantified by target compounds in the oxidation process and a full factorial design evaluated the effect of variables.

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

Biochars prepared from exhausted husk (EH) and tannin (TAN) derived from black wattle were used to remove thiacloprid (TCL) and thiamethoxam (TMX) agrotoxics from spiked sample of the Marcela Dam, a natural reservoir in Itabaiana Municipality, Sergipe State, Brazil.

Boron isotopic composition was applied as a tool to differentiate among Brazilian red wine origin. The results have demonstrated that is possible to discriminate between wines produced on the Southern region from those produced on Sao Francisco Valley and also between the Brazilian red wines from Chilean, Italian and Portuguese wines.

Summary of the process used to synthesize the TiO₂/SiO₂-B₂O₃ ternary nanocomposites.

The addition of eggshell to an acrylic copolymer improves the gel strength and the water absorption and also provides a more useful destination for the residue.

Diagram of the setup for reducing sugar determination in wines.

A clean synthesis was developed to prepare selenium nanoparticles using fructose as the reducing agent. The obtained nanoparticles presented high toxicity toward cancer cells, and on the contrary are not toxic against human P4 fibroblasts.

The pentacyanoferrate(II)-isonicotinoylhydrazones inhibited the reaction catalyzed by Mycobacterium tuberculosis 2-trans-enoyl-ACP(CoA) reductase (MtInhA), showed antitubercular activity against M. tuberculosis H37Rv strain with no apparent toxicity to mammalian cells and presented intracellular activity in a macrophage model of infection.

Diiodo-functionalized benzo[b]furans were achieved through a simple electrophilic iodocyclization reaction involving alkynylated
2-iodoanisoles and molecular iodine in the presence of sodium bicarbonate.