JBCS

Potential for application of ionic liquids in biomimetic drug delivery systems, due to their high compatibility with enzymes and other proteins, promotion of higher selectivities, faster reaction rates and greater enzyme stabilities in biocatalytic reactions, and providing a path for the structural and functional stabilization of protein entities.

This review article describes the use of deep eutectic solvents (DES) as both solvent and/or catalyst in multicomponent reactions.

The combined antimicrobial action of the ternary mixture of silver nanoparticles, chitosan and antibiotics against four bacterial strains proved synergic. The pH conditions for the biological assays were carefully defined to exclude the acid effect in the antimicrobial action, preserving chitosan solubility.

Sediment from the bottom of biodiesel storage tanks was characterized by chemical and microbiological techniques. Fatty acids esters and metal ions were detected, as well as bacteria and fungi, which after 60 days in incubation did not exhibit biodiesel deteriogenic potential.

Solid-phase extraction and liquid chromatography coupled with an ultraviolet detector were used for the detection and quantification of 4-nonylphenol in samples of surface water collected in the basin of the Guandu River.

Electrical response of the immunosensor solutions containing the specific antibody anti-hepatitis C virus (HCV) could be clearly distinguished and for unspecific antibody anti-human immunodeficiency virus (HIV) no significant change has been observed.

Some new unexpected arylidene and fused heterocyclic 6-chloroquinoxaline 1,4-dioxide are synthesized from the precursor 6-chloro-3-(ethoxycarbonyl)-2-methylquinoxaline 1,4-dioxide.

Anthocyanins are attracting the interest of researchers and industry due to potential as a coloring agent and beneficial effects for health. The crude anthocyanin extract produced exhibited slight antimicrobial activity against Staphylococcus aureus, strong antioxidant activity and generalized amorphous behavior.

Guava and passion fruit waste generated by the juice industry were taken and treated to obtain the seed oils, which were characterized and used to produce biofuels.

Oxidation of hydrazine on the rGO/Co(Salophen)DNA modified electrode and cyclic voltammograms for the oxidation of hydrazine on the unmodified glassy carbon electrode (red voltammogram) and rGO/Co(Salophen)DNA modified glassy carbon electrode.

The binary solvent dispersive liquid-liquid microextraction was used for the simultaneous quantification of pesticides with a broad polarity range.

Analytical methods were applied in trichothecenes degradation by enzymatic action resulting in a reduction of 68.4% for DON (deoxynivalenol), 45.4% for 15-ADON (15-acetyldeoxynivalenol), 50.2% for 3-ADON (3-acetyldeoxynivalenol) and 12.3% for T-2 toxin.

Molecular docking calculations predict the adsorption of widely used antibiotic amoxicillin, but not gentamicin, to the Zn-based metal organic frameworks zeolitic imidazolate framework-8 (ZIF-8) and Zn(1,4-benzenedicarboxylate) (ZnBDC). Mass spectrometry measurements further demonstrate the degradation of amoxicillin upon contact with the Zn-containing frameworks.

The schematic representation of packed-fiber solid-phase extraction (PFSPE) device and the determination method proposed in this paper.

This paper reports the preparation of Pd/MgCO₃. The composition and size particle were obtained by X-ray diffraction (XRD) and transmission electron microscopy (TEM), respectively. The catalytic activity was studied for racemization of (S)-(-)-1-phenylethylamine and dynamic kinetic resolution (DKR) of a series of primary amines.

A multiple-injection capillary electrophoresis method was developed to determine antinitrosating capacity of nine commercial teas through nitrite quantification.

Two-dimensional gas chromatography of a crude oil sample.

In the low temperature (LT) region, the devulcanization happened due to the breakage of crosslinked bonds. Supercritical ethanol beyond the critical temperatures (medium temperatures (MT) and high temperatures (HT)) could strongly promote the devulcanizing reaction; the breakage of main chains predominated in the devulcanizing process. The devulcanizing reaction rate of natural rubber was faster than that of butadiene rubber.

A methodology for the determination of organophosphorus pesticides in sapodilla fruit based on QuEChERS (quick, easy, cheap, effective, rugged, and safe) extraction and gas chromatography-mass spectrometry (GC-MS) detection is described. Strong matrix effects could be observed and was overcome with the use of matrix match calibration. Chlorpyrifos, a level II toxic compound, was found in several commercial samples.

Constrained mixture design was used in the development of a method for Ca, Mg, Mn, Fe and Zn determination from palm oil samples.

The graphical abstract shows the 3D plots of molecular electrostatic potential of optimized structure and the interaction of acetylpyrazine N(4)butylthiosemicarbazone (APBT) with amino acid residues in cyclin-dependent kinase 2 (CDK2) macromolecule. Calculation within the grid box size of 30 x 30 x 30 ų showed the formation of stable complex with binding affinity value of -6.4 kcal mol^-1.

Lambda-cyhalothrin derivative products were identified by stir bar sorptive extraction and gas chromatography using liquid and thermal desorption.