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Combating food pathogens using sodium benzoate functionalized silver nanoparticles: synthesis, characterization and antimicrobial evaluation

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Abstract

Herein, we report the antimicrobial efficacy of sodium benzoate-functionalized silver nanoparticles synthesized via a simple method and its potential prospects as food preservatives. Sodium benzoate (SB) is a commonly known food preservative and is capable of reducing the silver salt to silver nanoparticles in high yield under facile conditions. The functionalization of SB imparts enough stability to the nanoparticles to remain dispersed in aqueous solution for long time, without the need of any other additional stabilizing agent. The nanoparticles were characterized using high-performance liquid chromatography (HPLC), atomic force microscopy (AFM), zeta potential, Fourier transform infrared spectroscopy (FT-IR), proton nuclear magnetic resonance (1H-NMR) and UV–visible spectroscopy. In order to explore its role as food preservative, the antimicrobial activity of sodium benzoate-capped silver nanoparticles (SB-SNPs) was tested against various food-borne pathogenic bacteria and the results clearly indicated that the synthesized nanoparticles were highly active against the food pathogen strains even at very low concentrations as compared to sodium benzoate alone.

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Acknowledgements

This work was supported by the Department of Biotechnology, India, Grant No. BT/PR10460/PFN/20/871/2013 and Science Engineering and Research Board (SERB), India, Grant No. SB/SO/BB/0040/2013. MK thanks SERB for research fellowship.

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Authors and Affiliations

  1. Department of Chemistry and Centre for Advanced Studies in Chemistry, Panjab University, Sector-14, Chandigarh, 160014, India

    Munish Kumar, Rajni Bala, D. V. S. Jain & Rohit K. Sharma

  2. Department of Microbiology, Panjab University, Sector-25, Chandigarh, 160014, India

    Vijay Singh Gondil & Sanjay Chhibber

  3. Central Scientific Instruments Organisation, Chandigarh, 160017, India

    Satish Kumar Pandey

  4. Department of Applied Sciences, University Institute of Engineering and Technology (U.I.E.T.), Panjab University, Sector-25, Chandigarh, 160014, India

    Nishima Wangoo

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  1. Munish Kumar
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  2. Rajni Bala
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  3. Vijay Singh Gondil
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  4. Satish Kumar Pandey
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  6. D. V. S. Jain
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  7. Rohit K. Sharma
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  8. Nishima Wangoo
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Correspondence to Nishima Wangoo.

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Kumar, M., Bala, R., Gondil, V.S. et al. Combating food pathogens using sodium benzoate functionalized silver nanoparticles: synthesis, characterization and antimicrobial evaluation. J Mater Sci 52, 8568–8575 (2017). https://doi.org/10.1007/s10853-017-1072-z

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  • DOI: https://doi.org/10.1007/s10853-017-1072-z

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