SELECTION OF A NUTRIENT MEDIUM FOR OBTAINING LYOPHILIZATE ASSOCIATION OF LACTIC ACID BACTERIA

2024

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DOI 10.53729/mv-as.2024.03.13
Data confidence 70 medium
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Abstract

The article describesthe preparation of lactic acid bacteria association lyophilizate based on Lacticaseibacillus paracasei 30/1 and Lacticaseibacillus paracasei 36/1, which are part ofa probiotic drug against intestinal and extra-intestinal infections of humans. Accordingto the results of the study, the best medium for growing this probiotic association is a nutrient medium of the following composition (g/l): glucose - 15.0; yeast extract - 5.0; meat extract - 5.0; peptone - 10.0; ammonium citric acid - 2.0; sodium acetic acid - 2.0; potassium phosphoric acid 1-substituted - 2.0; sodium phosphoric acid 2-substituted - 2.0; magnesium sulfate - 0.2; manganese sulfate - 0.05. Water –based on the calculation of bringing the volume of the medium to 1 liter, pH - 6.5-7.0.. A lyophilizateof an association of lactic acid bacteria grown ona nutrient medium of this composition with high antagonistic activity againstthe test cultures taken into the study after the lyophilic drying process was obtained. В статье описывается получение лиофилизата ассоциации молочнокислых бактерий на основе Lacticaseibacillus paracasei 30/1 и Lacticaseibacillus paracasei 36/1, входящих в состав пробиотического препарата против кишечных и внекишечных инфекций человека. По результатам исследования лучшим вариантомдля выращивания данной пробиотической ассоциации является питательная среда следующего состава (г/л): глюкоза - 15,0; дрожжевой экстракт - 5,0; мясной экстракт - 5,0; пептон - 10,0; аммоний лимоннокислый - 2,0; натрий уксуснокислый - 2,0; калий фосфорнокислый 1-замещенный - 2,0; натрий фосфорнокислый 2-замещенный - 2,0; магний сернокислый - 0,2; марганец сернокислый - 0,05, pH - 6,5-7,0. Получен лиофилизат ассоциации молочнокислых бактерий, выращенной на питательной среде данного состава с высокой антагонистической активностью в отношении взятых в исследование тест-культур, после проведения процесса лиофильного высушивания.