New strains of S. thermophilus lactic acid bacteria with high biotechnological potential for the milk processing industry, isolated from milk and spontaneous fermentation dairy products from various parts of the Republic of Moldova were selected and described. New data have been collected on the biodiversity of native S. thermophilus strains in milk and spontaneous fermentation dairy products from different parts of the Republic of Moldova. The application of molecular biology techniques to

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... tify strains studied by S. thermophilus demonstrated the relevance of PCR and FT-IR techniques for the identification of lactic bacteria species from natural sources.