Biological aspects of cultivation and application of active metabolites of B. subtilis probiotic
https://doi.org/10.32634/0869-8155-2022-359-5-137-142
Abstract
Relevance. In modern research, the topic of metabiotics is considered as one of the current directions in the development of probiotics, in the future — as a new class of metabiotics. The article presents the results of studies during the cultivation of the probiotic microorganism B. subtilis in a grain nutrient medium from naked oats, and a scientific and practical substantiation of an experimental probiotic suspension during the formation of microbiocenosis and metabolism of the gastrointestinal tract in early weaning piglets.
Methods. As the basis of nutrient media for obtaining metabolites of the probiotic culture of Bacillus subtilis, sprouted and non-sprouted oat grains of the naked variety Nemchinovsky were used at the rate of 100 g of crushed raw material per 3 l of water. The mass fraction of proteinogenic amino acids in experimental probiotic suspensions (EPS) was studied by capillary electrophoresis. The scientific and economic experiment was carried out according to the method of A.I. Ovsyanikov, 1976.
Results. In nutrient media based on oats (O, OP), the number of CFU of probiotic microorganisms has a certain variability. The increase in the abundance of B. subtilis CFU continued up to 6 days, in the OP sample it reached 5.8·107 CFU/cm, after what it decreased until 8th day down to 15.5·106 CFU/cm3. At the same time, the synthesis of amino acids is higher compared to control (germinated grain): lysine — in the range of 7.85–10.53 g/l, methionine — 2.03–2.35 g/l, leucine + isoleucine — in the range 5.79– 9.7 g/l. Indicators of protein metabolism are within the physiological norm in piglets of experimental groups. In piglets that received an experimental probiotic suspension, a more pronounced antagonistic effect, during the formation of microbiocenosis, was manifested to conditionally pathogenic bacteriaif they were given B. subtilis, obtained on a medium based on sprouted oats.
About the Authors
V. S. Popov
Federal Agricultural Kursk Research Center
Russian Federation
Russian Federation
Popov Viktor Sergeevich, Doctor of Veterinary Sciences, Leading
Researcher, Head of the Laboratory of Veterinary Medicine and
Biotechnology
70B, Karl Marx st., Kursk, 305021
G. A. Svazlyan
Federal Agricultural Kursk Research Center
Russian Federation
Russian Federation
Svazlyan Gayane Agasovna, Candidate of Biological Sciences,
Senior Researcher of the Laboratory of Veterinary Medicine and
Biotechnology
70B, Karl Marx st., Kursk, 305021
N. M. Naumov
Federal Agricultural Kursk Research Center
Russian Federation
Russian Federation
Naumov Nikolai Mihailovich, Candidate of Biological Sciences,
Senior Researcher of the Laboratory of Veterinary Medicine and
Biotechnology
70B, Karl Marx st., Kursk, 305021
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Review
For citations:
Popov V.S., Svazlyan G.A., Naumov N.M. Biological aspects of cultivation and application of active metabolites of B. subtilis probiotic. Agrarian science. 2022;(5):137-142. (In Russ.) https://doi.org/10.32634/0869-8155-2022-359-5-137-142
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