Thirty strains of Lactobacillus gasseri isolated from infant faeces were examined for production of an antimicrobial agent against 10 strains of the seven species of the genus Lactobacillus. Each of the strains inhibited the growth of at least one of the indicator strains. The agent was sensitive to proteolytic enzymes and stable for 20 min at 120°C. It is a bacteriocin designated as gassericin A.
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Toba et al. (1991) studied this question.
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