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I V Aseeva

Publications and source records attributed to I V Aseeva.

16 recordsLinked to original sources
PubMedDate not supplied

[Kinetics of continuous growth of a culture of Debaryomyces formicarius in an incubator and continuous-flow columns with a solid phase].

Continuous growth of the yeast Debaryomyces formicarius was comparatively studied in two types of open systems, viz, chemostat and a continuous-flow column packed with sand. The dynamics of concentrations of growth substrates and microbial biomass was assayed in the column and in the column eluate in the conditions of carbon and nitrogen limitation. A kinetic model for microbial growth in the continuous-flow column is proposed; the model is based on the assumption that the microbial population contains free and immobilized cells which differ sharply in their metabolic activity. Principal differences in the kinetics of microbial growth in continuous-flow columns as compared to that in chemostat are discussed.

Ascomycota↗
PubMedDate not supplied

[Kinetics of the growth of colonies of Mucor plumbeus and Mortierella ramanniana fungi on agarized media with glucose].

The growth kinetics of Mucor plumbeus and Mortierella ramanniana colonies was studied during cultivation of these two soil fungi on solid media with glucose as a limiting substrate. Within the whole studied range of glucose concentrations (s), the radial growth rate of colonies (Kr) can be satisfactorily described with the following equation that takes substrate inhibition into consideration: (Formula: see text) The values of kinetic parameters for M. plumbeus and Mort. ramanniana, respectively, are: the maximal radial growth rate Kr(max), 0.434 and 0.075 mm/hr; the saturation constant Ks, 6.5 and 5.6 mg/l; the substrate inhibition constant, Ks(i), 3315 and 98.6 mg/l. The mechanism of substrate inhibition is manifested in a decrease in the width (volume) of the peripheral zone of the colonial growth at high substrate concentrations, and is not related to a decrease in the specific growth rate of the fungi. Regardless of the drastic differences in the Kr of the two cultures, their specific growth rates are similar and depend on the substrate concentration according to in the same pattern.

Kinetics↗