Daily Archives: 06.04.2018

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The United Arab Emirates, China and Turkmenistan got interested in the Tyumen sapropel. Foreign companies wish to use this useful mineral with a high content of organic substances and amino acids as an effective recultivant to restore depleted soils. Oksana Ivaschenko, Master of Agriculture and expert advisor of GK Tyumensky sapropel, told about this at the 2018 Forum of subsoil users.


She mentioned that the company extracts its sapropel in the Yalutorovsky district, at the Nepryak Lake, 6 km from the Stary Kavdyk village. The water surface area is of about 2 km, with the distance between the lake surface and deposit is from 20 cm to 1.5 m. The lake silt is extracted by hydro-mechanical means, using only home equipment.

The Nepryak Lake sapropel is unique due to its high content of organic matter, up to 54%. It contains humic acids having antibacterial and bioactive properties that, being combined with amino acids, allows enriching the soil and nourishing plants. Also, this mineral is harmless in terms of microbiology and has no parasites in it, so it won’t harm farmlands.

According to Oksana Ivashenko, sapropel can be used not only as fertilizer and recultivant, but also in medicine, veterinary medicine, cosmetics and oil production. As of now, the Tyumen company specializes on creation of an organic fertilizer from sapropel, but it is currently developing recipes of soil mixes and subsoils and plans to use sapropel as a food additive and compound fodder preservative.

She noted that among the problems encountered by entrepreneurs one can be named that many people are unfamiliar with the beneficial properties of this mineral and don’t know about its advantages over usual mineral fertilizers and manure. Among these advantages she mentioned its environmental safety and long lasting effect: according to certain data, it can last up to 7-8 years depending on the intensity of land use.

“We are conducting experimental studies for usage of sapropel in recultivation of solid municipal waste landfills preventing the toxic substances leaking into the environment, in neutralization of disposal sites of dangerous wastes of livestock and poultry enterprises as well as in cleaning of territories polluted by petroleum products”, clarified the expert.

The volume of investments in the project amounted to 80 million Rubles. The project is being implemented with the support of the Government of the Tyumen region and is being maintained by the Investment Policy and Entrepreneurial State Support Department as well as the Investitsionnoe agentstvo Tyumenskoy oblasti Fund.

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Tyumen scientists have studied the kinetics of growth and enzyme activity in bacterial strains of the isolated from permafrost Bacillus genus as a function of incubation temperatures.

For the research, the scientists used Bacillus bacteria samples drawn from oil wells in Tarko-Sale (north of West Siberia). In a result of a microbiological analysis of the samples, 9 pure cultures of Bacillus spp were received. The strains species identification was conducted on the basis of their cultural, morphological, physiological and biochemical characteristics.


“The research results show that +5°С and +22°С are perfect temperatures for Bacillus strains growth, which exposes the psychrotolerant nature of isolates and their ability to survive and reproduce in a wide temperature range,” reported Olga Domanskaya, researcher from the UTMN International Institute of Cryology and Cryosophy.

She explained that active synthesis of specific enzymes is a universal adaptation mechanism for living in low temperature. Enzymes that are highly active at low above-zero temperature allow to offset cellular metabolic disorder, which enables bacteria cell to continue growing but with less speed.

Using the experimental data, the cryologists proved enzyme activity increase in the most of studied Bacillus strains under the conditions of low above-zero temperature.

Studying microorganisms of cryolithic zone is of a great scientific and applied interest, as existing within extreme conditions (such as low temperature) microbiota acquires unique features, in particular, enhanced activity of specific enzymes.

The results expand the knowledge about isolates usage options in applied biotechnological research. The research was conducted as part of the assignment by the Ministry of Education and Science of the Russian Federation.