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E I Kvasnikov

Publications and source records attributed to E I Kvasnikov.

174 records · Page 10Linked to original sources
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[Chemotaxonomic characteristics of bacteria belonging to the genus Nocardia isolated from Ukrainian SSR soils].

From soils of the Ukrainian SSR bearing oil and without it, 241 strains of Nocardia were isolated on mineral media containing n-alkanes C12-C22. The strains were divided into two groups: actinoid (N. asteroides, N. flavescens) and bacterium-like (N. rubropertincta, N. flava, N. ucrainica, N. salmonicolor, N. rubra, N. erythropolis, Nocardia ssp). Chemotaxonomic characteristics (the presence in the cells of galactose, arabinose, mesodiaminopimelic acid, lipid LCN-A) were used to differentiate Nocardia from other genera of actinomycetes and coryneforms and to confirm the taxonomy of museum strains. The majority of the Nocardia cultures belongs to the groups "asteroides" and "rhodochrous" according to location of spots of lipid LCN-A on chromatograms. The strains of N. asteroides and complex "M." rhodochrous may belong to both groups. A small number of strains belongs to the group which is represented by N. calcarea 41 (NCIB 8863).

Actinomycetales↗
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[Lactobacilli of freshwater fishes].

Normal microflora in the intestinal tract of fishes inhabiting fresh-water reservoirs includes lactic bacteria. The number of the bacteria depends on the animal species, the composition of food, the age, and the season. The highest number of these microorganisms (hundreds of millions per gram of the intestinal content) is found in carps. Enterococci are most often encountered in fishes inhabiting ponds: Streptococcus faecalis Andrewes a. Horder, Str. faecium Orla-Jensen, Str. bovis Orla-Jensen. Lactobacilli are more typical of fishes in water reserviors: Lactobacillus plantarum (Orla-Jensen) Bergey et al., L. casei (Orla-Jensen) Hansen a. Lessel, L. casei var. casei, L. casei var. rhamnosus, L. Casei var. alactosus, L. leichmannii (Henneberg) Bergey et al., L. acidophillus (Moro) Hansen a. Mocquot, L. Fermenti Beijerinck, L. cellobiosus Rogosa et al., L. Buchneri (Henneberg) Bergey et al. The content of lactic bacteria varies in water reservoirs; their highest content is found in ooze (tens of thousands per gram).

Animals↗
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[Effect of temperature on the synthesis of protein and individual amino acids by the thermotolerant yeast Candida tropicalis on media with hydrocarbons].

Synthesis of protein and amino acids by the thermotolerant yeast Candida tropicalis K-41 was studied at various temperatures of cultivation during growth on media with hydrocarbons in conditions of continuous cultivation. The content of protein in the cells decreased by 6% with an increase in growth temperature by 10 degrees C (from 29 to 39 degrees C) while excretion of free amino acids into the medium increased. The cultural broth of the cells grown at 39 degrees C contained up to 8 amino acids, with alanine, aspartic acid, serine and glycine prevailing. The content of amino acids which liberated into the medium decreased in the intracellular pool. However, the total amount of free amino acids in the system "cell--medium" remained constant at various temperatures of cultivation. Synthesis of free amino acids does not presumably limit total synthesis of protein by the yeast.

Alkanes↗