Morphological, biochemical and biological properties of probiotic cultures Bac. subtilis strains BI-9 and BI-12

  • I. Biben
Keywords: Bac. subtilis, probiotic cultures, antagonistic activity, transient microflora, biological properties, resistance to antibiotics

Abstract

Probiotics – biologics is made of live antagonistically active bacteria, or representatives of the normal resident microflora – lactobacilli, bifidobacteria, E. coli, aerococcus, saprophyte spore-bearing bacteria.From the combination of physiological and biochemical properties and biological activity factors, promising to create a probiotic microflora have bacillus species Bac. subtilis, Bac. cereus, Bac. megaterium. These types of saprophytic bacilli are expressed antrakoids-antagonistic properties against different microbial biocenosis stably extracted from different habitats including the organism tissue of warm-blooded animals, and insects and plants.Joined environmental objects pig feces and healthy piglets were isolated 12 crops saprophytic bacilli-antrakoids identified as Bacillus subtilis, of which two probiotic cultures possessed potencies and depositing as strains BI-9 and BI-12 transitory resident indigenous microflora.Culture Bac. subtilis strain BI-9 and BI-12 have typical form basic characteristics exhibit pronounced antimicrobial antagonism representatives microbial biocenosis gastrointestinal tract were biochemically active show little resistance to the antibiotics had no pathogenicity factors and cause infectious diseases in bioassay on white mice.The prospect of further research is the use of crops Bac. subtilis strains BI-9 and BI-12 as a basis for the creation of probiotic preparations, due to significant antagonistic activity against pathogenic and conditionally pathogenic microorganisms.

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Section
Veterinary sciences