The influence of high-viscosity crude oil from the Usa field on the oxygenase activity of indigenous soil microflora has been investigated in the laboratory. After an adaptation period, microorganisms have adapted to hydrocarbons of high-viscosity oil and the rate of biochemical oxidation has increased. Oil utilization reached 50% within 60 days of the experiment. IR analysis of residual petroleum hydrocarbons showed the appearance of absorption bands at 1070, 1165, 1730, 1270, and 3300 cm−1, which indicate the presence of a large amount of oxygenated compounds and, hence, the occurrence of petroleum hydrocarbon oxidation processes. Gas chromatographic-mass spectrometric analysis has confirmed a high biodegradation rate: utilization of acyclic saturated hydrocarbons has made 77.5%; cyclic hydrocarbons, 99.2%, alkylbenzenes, 99%; and biaromatic, triaromatic, and polyaromatic hydrocarbons, 97–99, 96, and 97%, respectively.

The composition of alkanes; hydrocarbons from the hopane, oleanane, and abietane series and their derivatives; alkylbenzenes; naphthalenes; phenanthrenes; and tetra-, penta-, and hexacyclic aromatic hydrocarbons in peats from fen and bogs in the south of Western Siberia far from anthropogenic pollution sources was analyzed. The found differences in the composition and concentrations of individual compounds can be due to the species composition of bioproducers (moss, bacteria, flowering plants, and conifers), organic matter disposal conditions, the hydrodynamic regime of peat mires, and frequent fires in an area.

Data on the molecular composition of alkanes, resinous-asphaltic compounds, metalloporphyrins, and perylene in crude oils from the Vym and Malyshev horizons of the Middle Jurassic oil-and-gas play in West Siberia are reported. A directional trend in the variation of some parameters of the composition over the play area and the specifics of the composition of oils from different regions are shown.

Data are collated on the distribution of hydrocarbons, metalloporphyrins, and sulfur-containing compounds in oils of the Vymskii (Aalenian) and Malyshevskii (Bathonian) horizons from the Middle Jurassic oil-and-gas bearing basin in Western Siberia. It was shown that these oils are characterized by wide variations in the alkane composition and the contents of thiophenes, sulfides, disulfides, mercaptans, metalloporphyrins, and perylenes. The amount of sulfur-containing compounds in Middle Jurassic oils of Western Siberia is inversely proportional to the pristane/phytane ratio; the higher the ratio, the higher the content of sulfides and the lower the: content of thiophenes.

The potential of hydroxyalkyl methacrylate gel as a support for yeast cell immobilization by covalent attachment was investigated with respect to the length of spacer used and the manner of its activation. Saccharomyces paradoxus cells were immobilized successfully onto glutaraldehyde activated glycyl-, β-alanyl-and ε-aminocaproyl-derivatives of the above mentioned gel modified with hexamethylenediamine. Results suggest that covalent attachment via spacer is strongly influenced by cell surface characteristics.

AbstractDas Diketon (I) wird durch Saccaromyces elongosporus VKMu‐426 zu den Spiro‐äthern (II) und (III) reduziert.

AbstractFür die Herstellung der optisch aktiven D‐Homosteroide (VI) und (VII) wird die Methode der mikrobiologischen Asymmetrisierung angewandt.

The reduction of the methyl ether of 8,14-seco-D-homo-Δ1,3,5(10),9(11)-estratetraen-3-ol-14,17a-dione by yeast gave optically active 8,14-seco-D-homosteroids.

The synthesis of D-homosteroids from methyl ethers of 8,14-seco-Δ1,3,5(10),9(11)-D-homoestra-tetraene-3, 17a-diol-14-ones was carried out.