Nutritional medium for differentiation of malignant anthrax

The purpose of the work is to develop a nutrient medium for differentiation of bacillus anthracis from soil aerobic bacilli. In order to achieve the set goal, we used the method of introduction into the environment of cultivation of microorganisms separated from animals and objects of external envir...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2020-08, Vol.548 (4), p.42005
Main Authors: Pavlenko, Igor V, Gryn, Svetlana A, Markova, Evgenia V, Matveeva, Irina N., Skotnikova, Tatyana A, Eremets, Vladimir I., Smolentsev, Sergey Yu
Format: Article
Language:English
Subjects:
Agar
Anthrax
Bacilli
Cemeteries
Crops
Differentiation
Levan
Meat
Metabolism
Microorganisms
Nutrients
Peptone
Peptones
Planting
Saprophytes
Soil contamination
Soil water
Soils
Stimulators
Substrates
Sucrose
Synthesis
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Summary:The purpose of the work is to develop a nutrient medium for differentiation of bacillus anthracis from soil aerobic bacilli. In order to achieve the set goal, we used the method of introduction into the environment of cultivation of microorganisms separated from animals and objects of external environment (water, soil, feed, air, scrapes from different surfaces suspected of contamination by their bacillus anthracis) of nutrient substrate - sucrose, used by bacteria of Bacillus genus for synthesis of levan - product of their metabolism, a sign absent in bacillus anthracis. This feature is essential for identification and differentiation of bacillus anthracis from closely related saprophytes. To identify and differentiate the bacillus anthracis, the microbes isolated from the external environment were cultivated in a nutrient medium consisting of meat-and-peptone agar (MPA) and stimulator (inductor) synthesis of levan sucrose in the amount of 10% to 100 ml of melted agar. The proposed nutrient media was prepared as follows. Meat-peptonic agar (500 ml) was melted at 100°C, 10 g of sucrose was added per 100 ml of medium and after the complete dissolution of sucrose, the nutrient medium was poured into Petri dishes and used for sowing the studied material for identification and differentiation of grown crops. The efficiency of the method has been tested in production experiments with positive evaluation. For this purpose, soil samples taken from the territory of old cattle cemeteries were fractionally sown on MPA and thermostatted for 16-18 hours at 37°C and examined crops for the presence of matte and rough (R-form) colonies.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/548/4/042005