Production of biomass from whey permeate and starch hydrolysates by Saccharomyces cerevisiae and Kluyveromyces marxianus [electronic resource].

Includes reference.

Three local strains of Saccharomyces cerevisiae (Sc 1, Sc 2 and Sc 3) and one strain of Kluyveromyces marxianus were used as pure or mixed cultures in a commercial medium, in order to compare their kinetic parameters and fermentation patterns, It was found that S. cerevisiae Sc 3 had the highest maximum specific growth rates on glucose (0.32 h⁻¹) and on ethanol (0.11 h⁻¹), The yields of biomasses on glucose and on ethanol were the most important. A low yield of ethanol on glucose 0.33 (g/g) was obtained. Kinetic studies of continuous production of biomass from a mixture of whey permeate and starch hydrolysates using mixed culture of Saccharomyces cerevisiae Sc 3 and Kluyveromyces marxianus were performed. In the course of continuous culture on mixed substrate of whey permeate and starch hydrolysates "A",Kluyveromyces marxianus overgrew Saccharomyces cerevisiae. Whereas in the course of continuous culture on mixed substrate of whey permeate and starch hydrolysates "B" there was a stabilization of the coculture (Saccharomyces cerevisiae Sc 3 and Kluyveromyces marxianus).

Summary in arabic.

1