Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

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STUDY OF THE INFLUENCE OF THE NUTRIENT MEDIUM ON CHANGES IN BIOCHEMICAL AND MORPHOLOGICAL CHARACTERISTICS OF LACTOBACILLI STRAINS

Bespomestnykh K.V. 1
1 Kemerovo State Institute of Agriculture
The results of the study of biochemical and morphological properties of strains of bacteria of Lactobacillus bulgaricus. The possibility of using disks with carbohydrates to determine the species of Lactobacillus bulgaricus strains studied for their ability to ferment disaccharides. Morphology of isolated strains in phase-contrast microscopy showed that the culture represented Gram-positive rods, assembled in pairs or individually arranged. Choose the optimal qualitative and quantitative composition of selective growth media for culturing lactic acid bacteria. When studying the properties of saccharolytic strains Lactobacillus bulgaricus was found that bacteria fully ferment lactose and some strains can assimilate sucrose, maltose, mannose. Revealed the composition of the culture medium causes a change saccharolytic properties of these crops during cultivation.