Potential Probiotic Characteristics of Lactobacillus and Enterococcus Strains Isolated from Traditional Dadih Fermented Milk against Pathogen Intestinal Colonization

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Traditional fermented buffalo milk in Indonesia (dadih) has been believed to have a beneficial impact on human health, which could be related to the properties of the lactic acid bacteria (LAB) involved in its fermentation process. In previous studies, it was discovered that strains of dadih lactic isolates possessed some beneficial properties in vitro. In the present study, the adhesion capacity of specific LAB isolates from dadih to intestinal mucus was analyzed. Further, the ability to inhibit model human pathogens and displace them from mucus was assessed. The adhesion of tested LAB strains was strain-dependent and varied from 1.4 to 9.8%. The most adhesive Lactobacillus plantarum strain was IS-10506, with 9.8% adhesion. The competition assay between dadih LAB isolates and pathogens showed that a 2-h preincubation with L. plantarum at 37°C significantly reduced pathogen adhesion to mucus. All tested LAB strains displaced and inhibited pathogen adhesion, but the results were strain-specific and dependent on time and pathogen strains. In general, L. plantarum IS-10506 showed the best ability against pathogen adhesion.

Document Type: Research Article

Affiliations: 1: Functional Foods Forum, University of Turku, Itäinen Pitkäkatu 4A, 20014 Turku, Finland 2: Functional Foods Forum, University of Turku, Itäinen Pitkäkatu 4A, 20014 Turku, Finland; Seameo-Tropmed RCCN-UI Salemba Raya 6, Jakarta 10430, Indonesia 3: Department of Biochemistry and Pharmacy, A ˚ Åbo Akademi University, Tykistökatu 6A, 20520 Turku, Finland

Publication date: March 1, 2007

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