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Information × Registration Number 0216U010260, 0113U005847 , R & D reports Title Physico-chemical and biological mechanisms of influence of ultradisperse mineral phases on biological systems popup.stage_title Head Ulberg Zoja Rudolfovna, Registration Date 26-12-2016 Organization F.D. Ovcharenko Institute of biocolloidal Chemistry NAS of Ukraine popup.description2 An energy-dependent ability of pathogenic disease-producing microorganisms to actively accumulate Au and Ag nanoparticles with a medium size of 30 nm at the level of transmembrane transfer and intracellular transport was discovered. Transmembrane potential and its generators functioning had the determining influence. The violation of integrity of a cellular shell and the inhibition of energy metabolism enzymes took place when the metal nanoparticles act as a bactericide. It was established that the gold nanoparticles (size 30 nm, concentration 9,65 g/ml) and silver nanoparticles (size 30 nm, concentration 40 and 20 g/ml) are effective elimination agents of the R-plasmids from antibiotic resistant clinical isolates of pathogenic bacterial strains. The mechanisms of silver nanoparticles formation in lactic acid bacteria from ammonium solution of AgNO3 by the sorption reduction method with sodium borhydride and by the biogenic reduction method were investigated. The procedure of L. plantarum treatment in a low intensity pulse electric field (voltage 20-70 V, frequency 200-10000 Hz) changed the surface properties of cells and subsequently changed the conditions of biogenic silver particles formation and also favoured the formation of stabilized in cell wall particles in a narrow size range of 4 - 6 nm. High antimicrobial activity of the nanobiocomposite was estimated. The new pine (Pinus sylvestris) shavings based biosorbent treated by thiourea groups was developed for the precious metals concentration. This biosorbent can quantitatively extracts precious metals ions from dilute solutions of hydrochloride acid (0,5 - 4,0 M) were a sorption of non-ferrous and heavy metal ions is absent, and can be used for their concentrating from induced refining waters to get concentrated on precious metals stropping solution. Soil substrates with ultradispersed mineral phase from municipal wastewater sludge depositions and acrylic hydrogels saturated with bioelements for plants nutrition were investigated. The prolonged desorption of heavy metals (micro- and macroelements) from gel composites under citric acid and plant exudates treatment was estimated. This indicates their value as a fertilizer agent. Express method for soil substrates biological activity controlling based on the observation the seeds germination was developed. Rational approaches to an artificial soil formation where the gel composites with immobilized bioelements are the active constituents were proposed. Product Description popup.authors І.І. Волобаєв А.К. Трохимчук В.І.Подольська Г.М. Ніковська К.В. Калініченко Л.М. Осмоловська Л.М. Якубенко Л.С.Резніченко Н.І. Грищенко О. А. Циганович О.В. Легенчук О.Г. Савкін О.О. Сірик О.Ю.Войтенко Р.В. Горда С.М. Дибкова Т.Г. Грузіна popup.nrat_date 2020-04-02 Close