the kinetics and mechanism of the reaction between benzaldehyde 1, malononitrile 2 and dimedone 3 in a mixture of ethanol and water as solvents in the presence of fructose as a biodegradable catalyst has been studied by the spectroscopic method (uv-vis spectrophotometry method). the influence of various parameters (temperature, solvent and concentration) was studied on the reaction by means of ...

The measurement of parameters that describe kinetic processes is important in the study molecular interactions. It enables a deeper understanding physical mechanisms underlying how different biological entities interact with each other, such as viruses cells, vaccines antibodies, or new drugs specific diseases. In this work, we theoretically use quantum sensing techniques for measuring sensor c...

in this study, decolorization of the diazo dye, reactive black 5 (rb5) in a coprinus cinereus peroxidase-catalyzed reaction has been investigated. a bisubstate kinetic model for the reaction rate based on the ping-pong mechanism was assumed for the enzymatic decolorization. experimentswere conducted at different rb5 and hydrogen peroxideconcentrations in a batch mannerto estimate the intrinsic ...

Ethanol from lignocellulosic biomass has been recognized as one of the most promising alternatives for the production of renewable and sustainable energy. However, one of the major bottlenecks holding back its commercialization is the high costs of the enzymes needed for biomass conversion. In this work, we studied the enzymes produced from a selected strain of Aspergillus niger under solid sta...

Immobilized metal chelate affinity chromatography (IMAC) support was practiced for α -amylase immobilization. Poly(hydroxyethylmethacrylate-methacryloylamidotryptophan)-Ni [p(HEMA-MAT)-Ni ] nanospheres, average diameter 100 nm, were produced by surfactant free emulsion polymerization. Characterizations of p(HEMAMAT)-Ni nanospheres were carried out by Fourier transform infrared (FTIR) spectrosco...