Carbendazim is a possible human carcinogen. It is persistent and very toxic, and has been banned in Australia, the USA, and most European Union countries. Various carbendazim formulations are still allowed to be produced and used in China. The results of analyses of carbendazim residues in veget...

The effects of treatment with calcium l-ascorbate, l-ascorbic dipalmitate, l-ascorbic stearate and erythorbic acid on two-stage urinary bladder carcinogenesis in F344 rats after initiation with N-butyl-N-(4-hydroxybutyl)nitrosamine (BBN) were examined. Carcinogen was administered at a dose of 0....

Only l-ascorbic acid activated plant myrosinase (thioglucoside glucohydrolase, EC 3.2.3.1), whereas ascorbic acid analogs did not.The enzyme protein was conformationally changed by the addition of l-ascorbic acid to the spectrophotometric analysis, approx. 1.5 amino residues appeared on the surf...

Two new, simple, relatively fast and robust methods for the simultaneous kinetic determination of binary mixtures of ascorbic acid (Asc) and cysteine (Cys) were developed using the mean centering of ratio kinetic profiles method. The methods are based on the difference in the reaction rates of A...

We report on the synthesis of the novel types of cytosine and 5-azacytosine (1–9), uracil and 6-azauracil (13–18) and cyanuric acid (19–22) derivatives of l-ascorbic acid, and on their cytostatic activity evaluation in human malignant tumour cell lines vs. their cytotoxic effects on human nor...

l-arginine was electropolymerised on a carbon paste electrode (CPE) to form the biopolymer by free radical formation in the electro oxidation process of the amino and carboxylic group containing compound by cyclic voltammetric technique. The modified electrode shows an excellent electrocatalytic...

l-ascorbic acid alkyl esters (ASCn) are molecules of pharmaceutical interest for their amphiphilic nature and proposed antioxidant power. In contrast to l-ascorbic acid, ASCn with different acyl chain lengths behaved stably upon oxidation and a tautomeric isomerization was observed. In Langmuir ...

Keeping the potential synergy of biological activity of synthetic anomalous derivatives of deazapurines and l-ascorbic acid (l-AA) in mind, we have synthesized new 3-, 7- and 9-deazapurine derivatives of l-ascorbic (1–4, 8–10, 13–15) and imino-l-ascorbic acid (5–7, 11, 12, 16–19). These nov...

Tumoral cells are known to have a higher ascorbic acid uptake than normal cells. Therefore, the aim of this study was to obtain polymeric nanoparticles containing the antitumoral compound trans-dehydrocrotonin (DHC) functionalized with L-ascorbic acid 6-stearate (AAS) to specifically target this...

BackgroundAlzheimer's disease (AD) is the most common neurodegenerative disorder which is characterized by the deposits of intra-cellular tau protein and extra-cellular amyloid-β (Aβ) peptides in the human brain. Understanding the mechanism of protein aggregation and finding compounds tha...

New binucleating ligands, bis(isocyclam) with a linear methylene chain bridge, n-bicy (n = 2, 3, 4) and their copper(II) complexes, Cu2(n-bicy)(ClO4)4· xH2O and Cu2(n-bicy)(NCS)4·yH2O have been synthesized. The magnetic moments of these complexes were normal, but the presence of magnetic coupl...

Hydrophobically modified silica aerocgel was used for in situ random copolymerization of styrene and butyl acrylate by activators regenerated by electron transfer for atom transfer radical polymerization (ARGET ATRP) to synthesize tailor-made poly (styrene-co-butyl acrylate) nanocomposites. Nitr...

A composite additive for oil pipeline pumping has been tested as a viscosity modifier and crystallization modifier (depressant) in two crude oils and gas condensate of West Siberian deposits with the different content of resins and waxes. The additive represents a toluene solution of a cationic ...

Water absorption resins of pullulan graft methyl acrylate (PU-g-MA) using ceric ammonium nitrate (CAN) as an initiator has been investigated under nitrogen atmosphere in aqueous medium. The percentage grafting (%PG) is favoured by increasing reaction time but is affected by higher concentration ...

The inerting effect of crystalline II type Ammonium Polyphosphate (APP-II) on explosion characteristics of micron-size Acrylates Copolymer (ACR) powders was experimentally studied. The inerting mechanism was analysed by combining thermogravimetry (TG) and differential scanning calorimetry (DSC) ...

The present work deals with extraction of Cellulose Nano Crystals (CNCs) from Banana fiber using the steam explosion method. Extracted CNCs was grafted with butyl acrylate (BA) monomer with ceric ammonium nitrate (CAN) as an initiator. The prepared graft copolymer was analyzed using FTIR, XRD, S...

UV-curable urethane acrylate oligomer (UV-UAO) containing ammonium salts, suitable for anti-fog (AF) coatings was synthesized. The expected UV-UAO structure was confirmed by FT-IR and 1H NMR. This UV-UAO was then formulated with reactive monomers and photoinitiator to form coating formulas. In o...

The aim of this work is to study the interaction between Toluidine Blue (TB), a cationic dye, and an anionic polyelectrolyte, poly (ammonium acrylate) (PANH4). The UV–Visible spectroscopy study shows that addition of increasing amounts of poly (ammonium acrylate) induces the formation of a meta...

Swollen cellulose fibres isolated from water hyacinth were utilized in the synthesis of water hyacinth cellulose-graft-poly(ammonium acrylate-co-acrylic acid) polymer hydrogel (PHG). Acrylic acid (AA) partially neutralized with NH3 was heterogeneously grafted onto swollen cellulose by radical po...

A series of acrylate polymers containing quaternary ammonium salts (PDMAEMA-BC) having tunable molecular weights were synthesized via atom transfer radical polymerization (ATRP), and the effect of the degree of polymerization (DP) on the antimicrobial activity against bacteria (Escherichia coli,...