INHIBITORY POTENTIAL OF METABOLITES FROM LACTOBACILLUS CASEI AGAINST PHENOTYPIC CHARACTERISTICS OF SALMONELLA TYPHIMURIUM LT2

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NAGHILI HOSSEIN; TAJIK HOSSEIN; RAEISI MOJTABA; GHASEMMAHDI HADI; MORADI MEHRAN; AMIN ZARE MAJID; MEHDIZADEH TOURAJ; HASANZADAZAR HASAN; HARIRI FARDIN

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Journal: MEDICAL LABORATORY JOURNAL Year:2016 | Volume:10 | Issue:6 Page(s): 7-13

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Title

INHIBITORY POTENTIAL OF METABOLITES FROM LACTOBACILLUS CASEI AGAINST PHENOTYPIC CHARACTERISTICS OF SALMONELLA TYPHIMURIUM LT2

Author(s)

Keywords

ANTI-BACTERIAL

LACTOBACILLUS CASEI METABOLITES

PHENOTYPIC CHARACTERISTICS OFS. TYPHIMURIUM

Abstract

Background and Objective: Several studies have shown the antimicrobial activity of lactobacilli against Salmonella enterica (serotype typhimurium). The aim of this study was to evaluate the inhibitory potential of metabolites produced by probiotic culture ofLactobacillus casei against S. typhimurium and its impact on S. typhimurium motility and biofilm formation.Methods: In order to evaluate the impact of the metabolites, L. casei cell-free culture supernatant (CFCS) was collected by centrifugation of L. casei secondary cultures.Effectiveness of the CFCS against Salmonella was evaluated by the well-diffusion method. In addition, in vitro effect of this treatment on motility in Swarm agar and biofilm formation by the bacteria was investigated.Results: Inhibition zone diameters of S. typhimurium were 0.83 and 12.1 mm at concentrations of 50 and 100μl of Lactobacillus CFCS against the log4 of S. typhimurium, respectively. Moreover, CFCS treatment inhibited the motility and biofilm formation by Salmonella. Concentrations of 5% and 10% were determined as the minimum inhibitory concentrations for motility and biofilm formation byS. typhimurium. Furthermore, effectiveness of the CFCS against Salmonella was dose-dependent (P<0.05).Conclusion: L. casei CFCS is able to inhibit the growth, motility and biofilm formation inS. typhimurium.

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References

RATIONAL EVALUATION OF ANTIMICROBIAL PROPERTIES OF LACTOBACILLI ISOLATES AGAINST SOME PATHOGENIC MICROORGANISMS: A NEW METHOD COMPARING THE SUSCEPTIBILITY OF INDICATOR MICROORGANISMS

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APA: Copy

NAGHILI, HOSSEIN, TAJIK, HOSSEIN, RAEISI, MOJTABA, GHASEMMAHDI, HADI, MORADI, MEHRAN, AMIN ZARE, MAJID, MEHDIZADEH, TOURAJ, HASANZADAZAR, HASAN, & HARIRI, FARDIN. (2016). INHIBITORY POTENTIAL OF METABOLITES FROM LACTOBACILLUS CASEI AGAINST PHENOTYPIC CHARACTERISTICS OF SALMONELLA TYPHIMURIUM LT2. MEDICAL LABORATORY JOURNAL, 10(6), 7-13. SID. https://sid.ir/paper/701457/en

Vancouver: Copy

NAGHILI HOSSEIN, TAJIK HOSSEIN, RAEISI MOJTABA, GHASEMMAHDI HADI, MORADI MEHRAN, AMIN ZARE MAJID, MEHDIZADEH TOURAJ, HASANZADAZAR HASAN, HARIRI FARDIN. INHIBITORY POTENTIAL OF METABOLITES FROM LACTOBACILLUS CASEI AGAINST PHENOTYPIC CHARACTERISTICS OF SALMONELLA TYPHIMURIUM LT2. MEDICAL LABORATORY JOURNAL[Internet]. 2016;10(6):7-13. Available from: https://sid.ir/paper/701457/en

IEEE: Copy

HOSSEIN NAGHILI, HOSSEIN TAJIK, MOJTABA RAEISI, HADI GHASEMMAHDI, MEHRAN MORADI, MAJID AMIN ZARE, TOURAJ MEHDIZADEH, HASAN HASANZADAZAR, and FARDIN HARIRI, “INHIBITORY POTENTIAL OF METABOLITES FROM LACTOBACILLUS CASEI AGAINST PHENOTYPIC CHARACTERISTICS OF SALMONELLA TYPHIMURIUM LT2,” MEDICAL LABORATORY JOURNAL, vol. 10, no. 6, pp. 7–13, 2016, [Online]. Available: https://sid.ir/paper/701457/en

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