BIO Web Conf.
Volume 37, 2021International Scientific-Practical Conference “Agriculture and Food Security: Technology, Innovation, Markets, Human Resources” (FIES 2021)
|Number of page(s)||6|
|Published online||27 October 2021|
Concept and principles of development of a new generation symbiotic preparation
Kursk Federal Agricultural Research Center", Kursk, Russian Federation, 305021, Karl Marx st., 70B ;
* Corresponding author: ManukyanG@yandex.ru
The article presents the results of the research on the cultivation of B. bifidum and B. subtillis in a high-carbohydrate nutrient medium composed of beet molasses, obtaining metabolites and scientific and practical substantiation of the resulting culture liquid as a biologically active additive. The material of the laboratory studies was sugar beet molasses of 5%-10%-15%-20%-25% concentrations. The studies used the probiotic microorganism B. bifidum, strain No. 1 and B. subtilis, strain DSM-3242. To obtain bacterial concentrate, a daily culture of microorganisms was used, which was standardized to 1×106 CFU / cm3. The testing process was carried out according to the indicators of the mass fraction of fermented sugars, determined by the calculation method, branch standard OCT 18-395-82. The number of CFU was calculated in the Goryaev chamber using the method of GPhA (General Pharmacopeic Article) 1.7.2.0008.15. The content of amino acids, vitamins, and organic acids in the culture fluid was determined by capillary electrophoresis in the device “Drops”. During the cultivation of B. bifidum and B. subtillis, a certain metabolic activity of their vitality was found, which is expressed in a decrease in the mass fraction of the amount of fermented sugars in the range of 53.7% to 23.7%. The hydrogen index is from 6.70 to 3.77 in experimental samples of molasses. The number of B. bifidum and B. subtillis CFUs cultivated on 5% molasses on the second day reached 7x106 CFU/cm3 and 8.2 × 106 cm3. In other concentrations, a maximum indicator of the number of microorganisms occurred on the third day and did not exceed 6.6 and 7 × 106 CFU/cm3. A significant synthesis of metabolites in the form of indispensable and conditionally dispensable amino acids and organic acids was determined. The dynamics of amino acid synthesis is consistent with the amylolytic and enzymatic activity of microorganisms in the molasses culture medium. In this case the level of enzymes is directly dependent on the number of CFU.
© The Authors, published by EDP Sciences, 2021
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