THE USE OF LACTIC ACID BACTERIA IN THE PROCESS OF DIRECTED FERMENTATION OF A WHITE CABBAGE

Fermentation is a very complex dynamic process with numerous chemical, physical, and microbiological changes affecting the quality of the finished product. At present, in the industry starter cultures are practically not used, which leads to large losses of finished products (up to 40 %). The use of starter cultures allows not only to obtain high quality products, but also to significantly reduce production losses. The aim of the research was to study the process of directed fermentation of white cabbage variety "Slava" using strains of lactic acid bacteria and their consortium, taking into account the degree of their mutual influence. The following lactobacilli were used as strains of lactic acid bacteria – Lactobacillus brevis VKM V1309, Lactobacillus plantarum VKM V-578. Experiments were carried out on model media to obtain comparative data. In the process of directional fermentation using strains of lactic acid microorganisms and their consortium for the first time studied the dynamics of changes in quality indicators. Mathematical models developed in the course of research adequately describe the degree of destruction of glucose and fructose during fermentation. The model medium was made of white cabbage (raw material) for research, for this purpose it was subjected to homogenization and sterilization in order to create optimal conditions for the development of the target microflora and to determine the degree of destruction of glucose and fructose by various strains of lactic acid microorganisms. In the process of research, we found that the use of a consortium of lactic acid bacteria (L. brevis + L. plantarum) for this culture medium is impractical, but the addition of fructose in the amount of 0,5% by weight of the model medium can significantly intensify the process of fermentation of white cabbage.

directed fermentation, use of lactic acid bacteria (LAB), white cabbage, lactoculture, consortium, model environment, degradation of glucose and fructose, mathematical data processing

1. Dennis С. Microbiology of fruits and vegetables / С. Dennis // Essays in Agriculture and Food Microbiology. Norris R., Pettipher G. L. (eds). – NY: John Wiley and Sons Ltd. 1987. P.227.

2. Fleming, H.P. 1987. Considerations for the Controlled Fermentation and Storage of Sauerkraut. P.26-32.

3. Spiros Paramithiotis, George Papoutsis, Eleftherios H. Drosinos. Lactic Acid Fermentation of Fruits and Vegetables // Food biology series/ Paramithiotis S. (ed.). - Boca Raton, London, New York: CRC Press, Taylor &Francis Group. 2017. P.1-32.

4. Britta Wiander. Lactic Acid Fermentation of Fruits and Vegetables // Food biology series/ Paramithiotis S. (ed.). - Boca Raton, London, New York: CRC Press, Taylor &Francis Group. 2017. P.65-78.

5. Josephsen J., Jespersen L. Fermented foods and starter cultures // Handbook of Food Science, Technology and Engineering / Hui Y. H. (ed.). — Boca Raton, FL: CRC Press, 2006. P.177-1-177-20.

6. Buckenhьskes, H.J. 1993. Selection criteria for lactic acid bacteria to be used as starter cultures for various food commodities. FEMS Microbiology Reviews 12: 253-272.

7. GOST 10444.11-2013 "Microbiology of food and animal feed. Methods for the detection and counting of the amount of mesophilic lactic acid microorganisms ".

8. Lyalina O.Yu., Glazkov S.V, Tirina E.S., Posokina N.E. / Investigation of fructose destruction processes in the process of directed fermentation of vegetables using strains of lactic acid microorganisms // Improvement of quality, safety and competitiveness of agro-industrial complex products in modern conditions: Proceedings of the IX International Conference of Young Scientists and Specialists, October 22, 2015 - М .: FGBNU VNIIPBIVP, 2015. P.191-195.