Archives of Microbiology

, Volume 199, Issue 4, pp 551–562 | Cite as

Inhibition of Staphylococcus aureus in vitro by bacteriocinogenic Lactococcus lactis KTH0-1S isolated from Thai fermented shrimp (Kung-som) and safety evaluation

  • Sutanate Saelao
  • Suppasil ManeeratEmail author
  • Sireewan Kaewsuwan
  • Hanitra Rabesona
  • Yvan Choiset
  • Thomas Haertlé
  • Jean-Marc Chobert
Original Paper


Lactococcus lactis KTH0-1S isolated from Thai traditional fermented shrimp (Kung-som) is able to produce heat-stable bacteriocin and inhibits food spoilage bacteria and food-borne pathogens. The inhibitory effect of bacteriocin remained intact after treatment with different pHs and after heating, but was sensitive to some proteolytic enzymes. Addition of bacteriocin KTH0-1S to Staphylococcus aureus cultures decreased viable cell counts by 2.8 log CFU/ml, demonstrating a bactericidal mode of action. Furthermore, the growth of S. aureus decreased significantly after 12-h co-cultivation with bacteriocinogenic strain. The molecular mass of bacteriocin KTH0-1S was found to be 3.346 kDa after ammonium sulfate precipitation, reversed phase (C8 Sep-Pak), cation-exchange chromatography, RP-HPLC on C8 column and mass spectrometry (MS/MS) analysis. Bacteriocin KTH0-1S was identified as nisin Z using PCR amplification and sequencing. The majority of tested virulence factors were absent, confirming the safety. Evidenced inhibitory effect of this strain, the absence of virulence factors creates the possibility for its application as protective culture to inhibit pathogenic bacteria in the several fermented seafood products.


Staphylococcus aureus Lactococcus lactis Nisin Z Inhibition Kung-som 



This work was supported by the Higher Education Research Promotion and National Research University Project of Thailand, Office of the Higher Education Commission (AGR540556j). A part of this work was supported by the Graduate School of Prince of Songkla University and the French Bio-Asie project from Foreign Affairs Ministry of France.


This study was funded by the Higher Education Research Promotion and National Research University Project of Thailand, Office of the Higher Education Commission (AGR540556j). This study was co-funded by Graduate School of Prince of Songkla University. This study was co-funded by the French Bio-Asie project from Foreign Affairs Ministry of France.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Data availability

All data generated or analyzed during this study are included in this published article and its supplementary information files.

Ethical approval

This article does not contain any studies with human participants or animals performed by any of the authors.

Informed consent

Informed consent was obtained from all individual participants of this study.

Supplementary material

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Supplementary material 1 (DOCX 188 kb)
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Supplementary material 2 (DOCX 71 kb)
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Supplementary material 3 (DOCX 16 kb)
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Supplementary material 4 (DOCX 16 kb)


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Copyright information

© Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Sutanate Saelao
    • 1
  • Suppasil Maneerat
    • 1
    Email author
  • Sireewan Kaewsuwan
    • 2
  • Hanitra Rabesona
    • 3
  • Yvan Choiset
    • 3
  • Thomas Haertlé
    • 3
    • 4
  • Jean-Marc Chobert
    • 3
  1. 1.Biotechnology for Bioresource Utilization Laboratory, Department of Industrial Biotechnology, Faculty of Agro-IndustryPrince of Songkla UniversityHat-YaiThailand
  2. 2.Marine Natural Products Research Unit, Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical SciencesPrince of Songkla UniversityHat-YaiThailand
  3. 3.UR 1268 Biopolymères Interactions Assemblages, Équipe Fonctions et Interactions des ProtéinesINRANantes Cedex 03France
  4. 4.Department of Animal Nutrition and Feed ManagementPoznan University of Life SciencesPoznanPoland

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