Food Science and Biotechnology

, Volume 25, Issue 3, pp 935–940 | Cite as

Synergistic antimicrobial activity of bacteriophages and antibiotics against Staphylococcus aureus

Article

Abstract

This study was designed to assess the synergistic antimicrobial effect of phages combined with antibiotics against Staphylococcus aureus. The phage-antibiotic synergy (PAS) effect was evaluated using the fractional inhibitory concentration (FIC) and flow cytometric analysis. The determined minimum inhibitory concentration (MIC) values varied from 0.125 to 128 μg/mL for S. aureus KACC 13236 (SAS) and from 0.25 to >256 μg/mL for S. aureus CCARM 3080 (SAR). The PAS effect was more pronounced in SAS treated with phage SA11 in the presence of cefoxitin (FIC=0.62), chloramphenicol (FIC=0.54), and polymyxin B (FIC=0.38). SAS and SAR cells were injured when exposed to asublethal concentration of ciprofloxacin, whereas these cells were highly susceptible to the phage-antibiotic combined treatment, showing 96% of relative percentages of injured and dead cells. The results suggest that the combined treatment of phages and antibiotics can be used to improve antimicrobial efficacy against antibiotic-resistant bacteria.

Keywords

phage-antibiotic synergy fractional inhibitory concentration Staphylococcus aureus antibiotic resistance bacteriophage 

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Copyright information

© The Korean Society of Food Science and Technology and Springer Science+Business Media Dordrecht 2016

Authors and Affiliations

  1. 1.Department of Food Science and Nutrition, Zhejiang Key Laboratory for Agro-Food ProcessingZhejiang UniversityHangzhou, ZhejiangChina
  2. 2.Department of Medical Biomaterials Engineering and Institute of Bioscience and BiotechnologyKangwon National UniversityChuncheon, GangwonKorea

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