In Ukrainian

Abstract

The study detected the influence of copper iodide particles (CuI) in an aqueous suspension of yeast cells of Saccharomyces cerevisiae on intensifying the process of fermentation under conditions of endogenous metabolism by the method of differential microcalorimetry. The power of heat release suspensions was recorded after transfer of yeast cells from dehydrated state into hydration one and then - into a state of life activity. The research of endogenous cell metabolism was performed in tap water. The size of dispersed particles of copper iodide was of 2–4 microns. Increased energy metabolism of cells of Saccharomyces cerevisiae is observed at content of 2% copper iodide and can be explained by the phenomenon of hormesis. Moreover, discovered violations of regularity of thermal process, at the mass content CuI from 2% to 8% in yeast suspensions, appears between the stages of hydration and metabolism, due to reserve carbohydrates, stage of activation of protective mechanisms of the system due to launch of adaptive functions, of cells - activated expression of stress genes. Maximum display of defensive functions of yeast was found at concentration of copper iodide ~6%, accompanied by a significant reduction in energy of this process and metabolism with further increase in CuI content. А fter reaching a "critical" concentration of copper iodide (C ≈ 7–8%) in the yeast suspensions, a significant reduction was observed in energy of metabolism and protective functions of cell yeasts, manifested in violation of the regularity of the thermal process, restructuring of plasmolemma.