3 Biotech

, 7:53 | Cite as

Antibiotic sensitivity pattern of indigenous lactobacilli isolated from curd and human milk samples

  • Chetan Sharma
  • Sachin Gulati
  • Nishchal Thakur
  • Brij Pal Singh
  • Sanjolly Gupta
  • Simranpreet Kaur
  • Santosh Kumar Mishra
  • Anil Kumar Puniya
  • Jatinder Pal Singh Gill
  • Harsh PanwarEmail author
Original Article


The gut microbiota plays a vital role in host well-being and lactic acid bacteria (LAB) have gained an overwhelming attention as health promoter. This perception has evolved from traditional dairy products to a money-spinning market of probiotics. The safety of probiotics is coupled to their intended use and LAB may act as pool of antimicrobial resistance genes that could be transferred to pathogens, either in food matrix or in gastrointestinal tract, which could be detrimental to host. This study evaluated the antibiotic susceptibility patterns of LAB isolated from curd (20) and human milk (11) samples. Antibiotic susceptibility was determined against 26 common antibiotics, following reference disc diffusion assay. A varied response in terms of susceptibility and resistance towards antibiotics was recorded. Among curd isolates, D7 (Lactobacillus plantarum) was the most resistant followed by D4, D8, D10 and D25. Among human milk isolates, HM-1 (L. casei) showed the highest resistance profile. All LAB isolates displayed high susceptibility pattern towards imipenem and meropenem. In general, high resistivity was exhibited by human milk isolates. The present study showed that antibiotic resistance is widespread among different lactobacilli, which may pose a food safety concern. Therefore, antibiotic sensitivity should be considered as a vital tool for safety assessment of probiotics.


Antibiotic resistance Susceptibility Lactic acid bacteria Lactobacillus Probiotics 



Antibiotic resistance


Antibiotic susceptibility


Lactic acid bacteria



The authors would like to acknowledge the financial support from SERB-MoFPI (SERB/MoFPI/026/2015) and SERB-DST (SB/YS/LS-131/2014), Government of India for carrying out the research work.

Compliance with ethical standards

Conflict of interest

No conflict of interest declared.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Chetan Sharma
    • 1
  • Sachin Gulati
    • 1
  • Nishchal Thakur
    • 1
  • Brij Pal Singh
    • 1
  • Sanjolly Gupta
    • 2
  • Simranpreet Kaur
    • 2
  • Santosh Kumar Mishra
    • 1
  • Anil Kumar Puniya
    • 1
  • Jatinder Pal Singh Gill
    • 2
  • Harsh Panwar
    • 1
    Email author
  1. 1.Department of Dairy Microbiology, College of Dairy Science and TechnologyGuru Angad Dev Veterinary and Animal Sciences University (GADVASU)LudhianaIndia
  2. 2.School of Public Health and ZoonosesGuru Angad Dev Veterinary and Animal Sciences University (GADVASU)LudhianaIndia

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