Vertically-aligned multiwalled carbon nanotubes (VA-MWCNTs) were grown using plasma enhanced chemical vapor deposition (PECVD) technique. These VA-MWCNTs were then dip coated by Poly methyl methacrylate (PMMA) followed by annealing. Samples were then polished to expose the tips of CNTs. Biological molecules Glucose Oxidase (GOx) were then immobilized on the exposed tips of these nanoelectrode e...

Co-precipitation of enzymes in metal-organic frameworks is a unique enzyme-immobilization strategy but challenged by weak acid-base stability. To overcome this drawback, we discovered that Ca2+ can co-precipitate with carboxylate ligands and under ambient aqueous conditions form [email protected] material composites stable wide range pHs (3.7–9.5). We proved on four varied isoelectric points, m...

BACKGROUND Most manufacturers of blood glucose monitoring equipment do not give advice regarding the use of their meters and strips onboard aircraft, and some airlines have blood glucose testing equipment in the aircraft cabin medical bag. Previous studies using older blood glucose meters (BGMs) have shown conflicting results on the performance of both glucose oxidase (GOX)- and glucose dehydro...

Various diselenides 1 – 8 have been examined with respect to their glutathione peroxidase-like activities (GPx-activities) as an index of their antioxidant properties. The glutathione oxidase activities of these compounds have also been reviewed reflecting the pro-oxidant properties (GOx-activities) and could be used as an index of cell toxicity. Based on a qualitative structure-activity relati...

Although hydrogen peroxide (H₂O₂) is one of the major antibacterial factors in most honeys, it does not accumulate in medical-grade manuka honey. The goal of this study was to investigate the effect of artificially added methylglyoxal (MGO) on H₂O₂ accumulation in natural non-manuka honeys. H₂O₂ concentrations in the honey solutions were determined using a fluorimetric assay. Two, the most pote...

We report a novel method of electrochemical signaling from antigen-antibody interactions at immunoelectrodes with bioelectrocatalyzed enzymatic signal amplification. For the immunosensing surface construction, a poly(amidoamine) G4-dendrimer was employed not only as a building block for the electrode surface modification but also as a matrix for ligand functionalization. As a model biorecogniti...

Инсулин тапшылығы мен қандағы глюкозаның жоғары концентрациясына байланысты қант диабеті әлемдегі өлім мүгедектіктің негізгі себептерінің бірі болып табылады. Қандағы глюкоза деңгейін үздіксіз бақылау жүрек ауруының, бүйрек жеткіліксіздігінің немесе зағиптылықтың алдын алады. Осыған тез, дәл және үнемді анықтау қажет. Сондықтан диабетінде глюкозаны анықтауға арналған үнемді, қолдануға оңай, дәл...

A novel amperometric sensor that integrates two independent measurement schemes into a single chip for detection of glucose is fabricated. The sensor uses micro-patterned Prussian blue (PB) and ferrocene modified glucose oxidase covered by a thin Nafion membrane. We have developed an amperometric sensor for the detection of glucose that integrates two measurement schemes into a single chip. For...

OBJECTIVE Although waste is traditionally assessed as a pollutant which needs to be reduced or lessened, its management is certainly necessary. Nowadays, biological fuel cells, through the direct conversion of organic matter to electricity using biocatalysts, represent a technology able to produce sustainable energy by means of waste treatment. This study aims to propose a mean to generate ener...