to determine the extent and the size of the environment pollution with heavy metals, biologicalmethods, investigating the enzymatic activity of soil can be applied. most frequently, the enzymes investigated in the soils threatened with anthropogenic contamination are phosphatases, dehydrogenases as reacting fastest to the increase in the content of heavy metals in the environment. the aim of th...

mercury is one of the three major environmental metal poisons, and mercuric chloride is a highly reactive compound which can harm cells by a variety of mechanisms including direct interaction with sulphydryl groups of proteins and enzymes, therefore affecting the enzymatic activity. this study focused on the effect of hg++ on horseradish peroxidase (donor: hydrogen peroxide oxidoreductase, ec 1...

basil (ocimum basilicum l.) belongs to the lamiaceae family as a medicinal plant used in traditional medicine in iran. the purpose of this test is to evaluate the effect of nano fe-chelate under salinity levels on the plant physiology and morphology characteristics. in this experiment  investigated the effect of nano fe-chelate and salinity stress on growth parameters, photosynthetic leaves rat...

Introduction and objective: Esterase activity is used in evaluation and correlation of strains in fungi. Our previous study showed that Candida albicans has a kind of intracellular esterase activity in yeast extract, peptone, and glucose medium (YPG). The aim of this research was to study the qualitative and quantitative differences of this enzymatic activity among clinical isolates of this yea...

approved by : The enzymatic activities of bacteriophage T4 lysozyme mutants with different structural stabilities were measured in the presence and absence of colloidal silica nanoparticles using a spectrophotometric technique and an agar plate bioassay. Spectrophotometric technique is based on the continuous reading of the change in turbidity of a bacterial suspension, while agar plate bioassa...

Bicontinuous lipid cubic mesophases are widely investigated as hosting matrices for functional enzymes to build biosensors and bio-devices due to their unique structural characteristics. However, the enzymatic activity within standard mesophases (in-meso) is severely hindered by the relatively small diameter of the mesophase aqueous channels, which provide only limited space for enzymes, and re...