The Lactobacillus strains used in this study were isolated from village-type yogurt and raw milk. The isolates were Lactobacillus delbrueckii subsp. bulgaricus 16 s with rDNA sequence analysis and API 50 CHL identification systems. The production of exopolysaccharide (EPS) of reproductive strains in skim milk was investigated. In addition, the sensitivity and insensitivity of these strains to domestic bacteriophages and nisin were studied.
It was concluded that strains with a relatively high capacity to produce EPS were insensitive to phages and nisin. A linear relationship was determined between the EPS production of bacteria and bacteriophage and Decin insensitivity. There was a negative relationship between the amount of EPS production and the sensitivity of bacteria to phage and Decin. The highest amount of EPS among all strains is L. Decoction. delbrueckii subsp produced bulgaricus B3 and …
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