Consumers are increasingly interested in healthier wines containing reduced levels or totally absent of sulphites. In the present investigation distinct fermentations of white musts either in the presence of chitosan or sulphur dioxide were carried out in order to compare the volatile and fixed ...

Spent sulphite liquor has been evaluated in continuous cultures for succinic acid production using Actinobacillus succinogenes and Basfia succiniciproducens. Continuous cultures were initially carried out at constant dilution rate (0.04 h−1) and varying commercial xylose concentrations (23–55 g...

A series of fifteen acetylcholinesterase inhibitors were designed and synthesised based upon the previously identified lead compound 5,6-dimethoxy-1-oxo-2,3-dihydro-1H-inden-2-yl 1-benzylpiperidine-4-carboxylate (5) which showed good inhibitory activity (IC50 0.03 ± 0.07 μM) against acetylchol...

Improvement of the performance of CO2 separation membrane under high temperature is of great importance in industrial applications. In this work, 2-aminoterephthalic acid (AA) was used to chemically cross-link polyvinylamine (PVAm) to fabricate PVAm-AA aqueous solution. PVAm-AA/polysulfone(PSf) ...

The photostability of eight blue-emitting derivatives of 2-aminoterephthalic acid, three of them containing a stabilizer residue in their molecule in dimethylformamide was investigated. Copolymerisation of methyl methacrylate with four of them, monomer compounds and whitening of methyl methacryl...

A fast and effective method using a modified QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) approach which includes partitioned liquid-liquid extraction (PLLE) and dispersive solid phase extraction (dSPE) clean-up step for the determination of seven 3-monochloropropane-1,2-diol (3-MCP...

During the industrial refining process of edible oils and the manufacture of oil-based foodstuff, contaminants such as 3-monochloropropanediol (3-MCPD) fatty acid diesters can be produced. One hundred samples of different edible oils and related fatty food purchased from local Spanish markets we...

An efficient synthesis of predominantly (E) symmetrical or unsymmetrical 1,2-difluorostilbenes based on the Suzuki–Miyaura palladium-catalyzed cross-coupling reaction of arylboronic acids with predominantly (E)-1,2-dibromo-1,2-difluoroethene in the presence of Cs2CO3 in toluene is described. Th...

The reaction of [CdBr2.4H2O] with N′-substituted N,N-di(2-picolyl)amine ligands such as 1-cyclohexyl-N,N-bis(pyridin-2-ylmethyl)methanamine (LA), N,N-bis(pyridin-2-ylmethyl)aniline (LB), 2-methoxy-N,N-bis(pyridin-2-ylmethyl)ethan-1-amine (LC) and 3-methoxy-N,N-bis(pyridin-2-ylmethyl)propan-1-am...

A priority pollutant Phthalate Esters (PAEs) are widely used as plasticizers and are responsible mainly for carcinogenicity and endocrine disruption in human. For the bioremediation of PAEs, a psychrotolerant Sphingobium yanoikuyae strain P4, capable of utilizing many phthalates di‑methyl phthal...

Di-(2-pyridyl)methyl-N,N′-dibenzyldithiocarbamate (L) and their metal complexes of formula [MII(L)Cl2], M = Pd (1); M = Pt, (2), and [PdII(L)2](BF4)2 (3) were synthesized and characterized in solution and in solid state by NMR, elemental analysis and vibrational spectroscopy, respectively. The ...

The equilibrium solubility of 6-chloroguanine in four co-solvent mixtures of dimethyl sulfoxide (DMSO) (1) + water (2), N,N-dimethylformamide (DMF) + water (2), isopropanol (1) + water (2) and 1,4-dioxane (1) + water (2) over the temperature range from (278.15 to 333.15) K were reported. At the ...

Microbial degradation of the chiral 2-phenylbutyric acid (2-PBA), a metabolite of surfactant linear alkylbenzene sulfonates (LAS), was investigated using both racemic and enantiomer-pure compounds together with quantitative stereoselective analyses. A pure culture of bacteria, identified as Xant...

A new approach for rapidly analysing chlorophenoxy acid herbicides in water is presented. The chlorinated acids are derivatised with dimethyl sulphate in the water sample itself (800 μl) and, next, the methyl esters are extracted with 800 μl of n-hexane. A 200-μl volume of the extract is inje...

A capillary gas chromatographic method with selected-ion monitoring (GC-SIM) was applied to eight common herbicides: 2-(4-chloro-o-tolyl-oxy)propionic acid, 3,6-dichloro-2-methoxybenzoic acid, 2-methyl-4-chlorophenoxyacetic acid, 2,3,6-trichlorobenzoic acid, 2,4-dichlorophenoxyacetic acid, 3,5,6...

Chlorophenoxy acids are toxic compounds used as selective herbicides in agriculture. To meet the need to determine trace levels of such pesticides in ground and drinking water, a highly selective and sensitive method using HPLC in combination with electrochemical detection has been developed. Th...

A consortium of three bacteria was isolated from top soil through their capacity to utilise the chlorinated, aromatic herbicide mecoprop as a single growth substrate. The consortium constituted a tight association of Alcaligenes denitrificans, Pseudomonas glycinea and Pseudomonas marginalis. The...

Five different haptens of the N-methylcarbamate insecticide metolcarb were designed and synthesized. All of the haptens were conjugated with ovalbumin (OVA) for the coating antigen, and one hapten containing all of the structure of metolcarb was conjugated with bovine serum albumin (BSA) for the...

Detailed insights regarding the inclusion process between β-cyclodextrin and the N-methylcarbamates insecticides like Bendiocarb, Carbaryl, Carbofuran and Promecarb, are proposed in bases of experimental and computational methods. The results from Fourier transform infrared spectroscopy, differ...

Malachite green (MG) separation from wastewater has always been a research focus in the field of environment. Removal of MG from aqueous solution using activated carbon has been studied or verified. Because of the different preparation materials and processes, the physicochemical properties of a...