Abstract
There was theoretically grounded and experimentally proved the expedience of enriching high-concentrated wort of the starch-containing raw material with such additional source of mineral nutrition for yeast cells as nanoparticles of metals. There was studied the influence of nanoparticles of metals on hydrolysis of biopolymers of the raw material and biosynthesis of organic compounds at wort fermentation. It was experimentally established, that the most positive influence of biosynthetic properties of yeast cells is realized by zinc and magnesium. At using zinc and magnesium, yeast biomass and alcohol content in mashes increase. Best chemical-technological indices of mashes were received at adding nanoparticles of zinc and magnesium at the stage of batch dilution. There was experimentally studied the synthesis of volatile organic admixtures in marsh distillates depending on point of adding nanoparticles of metals.
Highlights
Fermentation of wort of high concentrations is a promising and attractive research direction and has the important practical value
The studies of the influence of Mg, Fe, Cu, Zn nanoparticles on the process of fermentation of wort of high concentrations of the starch raw material were realized in the work
There was studied the influence of metal nanoparticles on bioconversion of wort and synthesis of organic compounds
Summary
Fermentation of wort of high concentrations is a promising and attractive research direction and has the important practical value. (2017), «EUREKA: Life Sciences» Number 6 tration in marshes results in extreme conditions for yeast life activity. It is known, that yeast cells are demanding to the cultivation environment and need essentially more mineral substances under stress conditions. For improving physiological condition of industrial strains of Saccharomyces cerevisiae yeast, mineral nutrition is important. It can essentially influence the process of alcohol wort bioconversion. The qualitative and quantitative composition, but “bioaccessibility” of metals in fermented substrates is important It is known, that many metals influence yeast productivity that is why more attention must be paid to mineral components in wort. At the same time physiologically adapted yeast cultures are able to increase general indices of alcohol marsh [4,5,6,7]
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