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Methods of determination of parameters of fermented whey-malty mixtures
(2018) Tsygankov, Sergii; Ushkarenko, Viktor; Grek, Olena; Krasulya, Olena; Ushkarenko, Iuliia; Tymchuk, Alla; Onopriichuk, Olena; Savchenko, Alexander
The methods of accumulation of yeast cells Kluyveromyces lactis 469 and their percent with glycogen from the general concentration at fermentation of wort of the restored mixture at different ratios of dry malt and whey are offered and results are obtained. According to the obtained data, it was established, that yeast cells actively developed in the period from 4 to 16 fermentation hour at the ratio of malt and whey in the restored mixture as 1:1,5 and 1:2. The increment of cells with glycogen in mixtures with the ratio – malt:whey as 1,5:1 and 2:1 was intensive. Thus, at 36 hour of fermentation the amount of yeast was 67,2 and 68,9 % respectively from the total number of cells.
Identification of by-products of fermentation of whey and malt worts
(2013) Chepel, Natalia; Grek, Olena; Krasulya, Olena
Results of gas chromatographic studies for definition of by-products of fermentation of whey and malt worts enabled evaluate advantages Zygosaccharomyces lactis 868-K yeast race objectively. Presence of the given yeast race in nutritional medium has a positive effect on producer’s metabolism, thus stimulating biosynthesis or transformation of nutritional medium aromatic substances.