The sorption of borate by ion exchange using a traditional layered double hydroxide (LDH) is affected by external conditions such as coexisting anions. Hydrotalcite intercalated with d-gluconate (G–LDH) was synthesized through a one-step microwave-assisted treatment and characterized by XRD, TE...

Analysis of cannabis has gained new importance worldwide, mainly for quality control within the legalized recreational and medical cannabis industry, but also for forensic differentiation between drug-type cannabis and legal products such as fiber hemp and CBD-rich/THC-poor cannabis. We herein p...

The renewed interest in dimeric salicylates as broad-spectrum anti-inflammatory and anti-diabetic agents provided a rationale to investigate the dimerization of the substituted salicylate Δ9-tetrahydrocannabinolic acid (THCA-A, 3a) as a strategy to solve its instability to decarboxylation and t...

For several years, hair analyses have become a powerful tool to investigate past exposure towards xenobiotics. In the case of illicit drugs and more precisely of cannabis exposure, four compounds are usually investigated: Δ9-tetrahydrocannabinol (THC), the main active compound of cannabis, one ...

Vitamin A and its biologically active derivatives, retinal and retinoic acid, play an important role in vision, are required for reproduction, act as morphogenic agents during embryonic development, and regulate the growth and differentiation of a wide variety of cell types throughout the life o...

The CbiT and CbiE enzymes participate in the biosynthesis of vitamin B12. They are fused together in some organisms to form a protein called CobL, which catalyzes two methylations and one decarboxylation on a precorrin intermediate. Because CbiE has sequence homology to canonical precorrin methy...

Background: In order to study the biosynthesis of vitamin B12, it is necessary to produce various intermediates along the biosynthetic pathway by enzymic methods. Recently, information on the organisation of the biosynthetic pathway has permitted the selection of the set of enzymes needed to bio...

Background: The crystal structure of precorrin-8x methyl mutase (CobH), an enzyme of the aerobic pathway to vitamin B12, provides evidence that the mechanism for methyl migration can plausibly be regarded as an allowed 1, 5-sigmatropic shift of a methyl group from C-11 to C-12 at the C ring of p...

The leptospira cbiC encodes the enzyme catalyzing the methyl rearrangement reaction of the cobalamin biosynthesis pathway. The protein has been cloned and overexpressed as a His-tagged recombinant protein in Escherichia coli. The crystal structures have been solved in two crystal forms (P42212 a...

The construction of a new recombinant strain of Escherichia coli in which two vitamin B12 biosynthetic genes, cobA and cobI, from Pseudomonas denitrificans are simultaneously overexpressed has resulted in the in vivo synthesis and accumulation of Factor III, an isobacteriochlorin not normally sy...

We calculate the absorption and fluorescence spectra of coumarin-151 in polar solvents by using the linear response free energy method, which provides the nonequilibrium solvation free energy for the final state. We compare the solvent effects on the bandwidths and shifts with those observed by ...

Carbon Capture and Storage is regarded as an important component in a portfolio of low-carbon energy technologies for mitigating climate change. Absorption technologies are presently the most available and effective approach for post-combustion CO2 capture. However, state-of-the-art amine-based ...

In the present study, we explore a facile route for the ultrafast preparation of nanostructured MnxOy at room temperature in a short reaction time using KMnO4 as precursor and deep eutectic solvents (DESs; such as CC-EG, CC-Glucose, and CC-EG-Glucose) as ecofriendly solvent cum reducing agent. A...

Two-dimensional infrared (2D-IR) spectroscopy is a powerful technique capable of accessing structure and dynamics with ultrafast time resolution in a wide range of chemical contexts. Since the early development of 2D-IR and related nonlinear IR spectroscopy methods, coordination complexes have b...

The extraction of scandium from an Australian red mud by selective acid leaching was explored and preliminary leaching tests showed that diluted sulphuric acid can be used to leach scandium from the red mud. The recovery of scandium from a synthetic leach solution of the red mud using solvent ex...

Recent developments in the evolution of more sustainable solvent use in organic synthesis are critically reviewed. Commonly used organic solvents and less common bio-based examples are assessed and ranked on the basis of waste disposal and environmental impact, health and safety parameters. The ...

Novel dye-doped polymer thin films were obtained by spin-coating method using polyvinylpyrrolidone (PVP) as polymer and Coumarin 151 (C151) as dye. The optical and morphological properties of the obtained dye-doped polymer thin films were investigated by UV–vis absorption, steady-state fluoresc...

CeO2 films formation is studied on single crystals and (1 0 0) oriented nickel substrates (Ni RABiTs) via the metal organic deposition technique. Ce(III) 2-ethylhexanoate: Ce(EH)3, in solution in toluene is used as chemical precursor. Homogeneous films are easily deposited by spin coating and th...

The copolymerization of carbon dioxide and cyclohexene oxide to generate polyethercarbonate using yttrium–metal coordination catalyst was carried out in this study. After testing several catalyst systems, it was found that the system consisting of Y(CF3CO2)3(I), Zn(Et)2(II),and glycerine(III) i...

The preparation of YBa2Cu3O7−y from mixtures of the 2-ethyl-hexanoates of yttrium, barium and copper has been investigated by thermogravimetry (TG), TG-DTA (differential thermal analysis). X-ray diffractometry, and energy dispersion X-ray analysis (EDX). The mixture is first transformed to a mix...