Abstract
Abstract-A comparative study of the influence of lactic acid bacteria and their consortium with yeast on the growth of pathogenic bacteria and fungi has been carried out. It was revealed that the proposed composition of probiotic microbial species has fungistatic activity and strongly pronounced fungicidal activity against mold micromycetes and phytopathogenic fungi, respectively. The consortium effectiveness in suppressing both bacteria and filamentous fungi exceeds that of the corresponding monocultures. Analysis of wheat seeds for the presence of fungi by germination in a humid chamber and on nutrient media showed that the association of a 3-day culture of lactic acid bacteria and yeast at a dilution of 1:100 significantly reduced the infection of plant material. The ability to suppress opportunistic and phytopathogenic microorganisms is explained by the presence in the microbial consortium culture liquid of metabolites with bactericidal and fungicidal properties: squalene, dimethyl fumarate, capric acid, lactic acid, acetic acid, caprylic acid, fumaric acid, butyric acid, decanol, butanol, pentanol and β-phenylethanol. Key words: lactic acid bacteria, consortium of microorganisms, antagonistic activity, phytopathogens, bacteria pathogenic for humans
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