Microorganisms physicochemical properties

Bioavailability of soil-sorbed organic chemicals depends on a variety of physicochemical factors as well as the characteristics of microorganisms involved. Although many studies have provided insight to our understanding of the bioavailability issue, simple correlations have not been found between bioavailability and physicochemical properties of sorbed chemicals or sorbents, nor microbial characteristics. 

The overall rate of deterioration of a chemical will depend upon its molecular structure the physicochemical properties of a particular environment the type and quantity of microbes present and whether the metabolites produced can serve as sources of usable energy and precursors for the biosynthesis of cellular components, and hence the creation of more microorganisms. 

The isolation of a particular microorganism from a markedly spoiled product does not necessarily mean that it was the initiator of the attack. It could be a secondary opportunist contaminant which had overgrown the primary spoilage organism once the physicochemical properties had been favourably modified by the primary spoiler. 

The physicochemical properties considered in this discussion are important because they all relate to the transport of the drug molecule to its site of action, more than likely a receptor with which the drug will interact in a given tissue or in an invading microorganism. Figure 1-1 represents a simplified distribution chart of a bioactive substance in the body. 

These results show that the phosphorus nutrition of a host plant can be heavily dependent on the molecular and physicochemical properties of the extracellular phosphohydrolases of its associated mycorrhizal fungi. This relationship could perhaps be generalized to other rhizospheric microorganisms, but experimental studies are still lacking. 

The popularity of silver nanoparticles (nAg) has its effect on the continuous development of methods for their obtaining and application. Similarly to all nanometric size materials, the characteristic properties of nAg are their very small size, a big surface area and unique physicochemical properties, which make silver the antibacterial. Among various nanomaterials like copper, zinc, titanium, magnesium and gold, nAg demonstrates the highest bactericidal efficacy against bacteria, viruses and other eukaryotic microorganisms [1]. 

The enzyme is widely distributed in animal tissues and microorganisms and has been purified by classical methods from several sources. - Multiple forms, which differ for electrophoretic mobility and molecular weight, have been observed in animal tissues in some cases the origin of these forms is due to the binding of catalytically inactive peptides or proteins to adenosine deaminase molecules. Recently, we have prepared a specific adsorbent, 9-(p-aminobenzyl) adenine bound to Sepharose, which allows the rapid and quantitative purification of the enzyme from several sources independently from the physicochemical properties of the multiple forms. ... 

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