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Can microbes mediate nano-transformation?

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Abstract

A green low-cost and reproducible microbe (Lactobacillus) and baker’s yeast (Saccharomyces cerevisiae) mediated biosynthesis of metallic and oxide nanoparticles are reported. Silver and copper oxide nanoparticles are synthesized using Lactobacillus sp. and Saccharomyces cerevisiae. The synthesis is performed akin to room temperature in the laboratory ambience. X-ray and transmission electron microscopy analyses are performed to ascertain the formation of metallic and oxide nanoparticles. Individual nanoparticles having the dimensions of 2–6 nm (metallic) and 10–20 nm (oxide) are found. A possible mechanism involved for the synthesis of metallic and oxide nanoparticles has also been proposed in which pH as well as the partial pressure of gaseous hydrogen (r-H2) or redox potential of the culture solution seem to play an important role in the process.

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Authors and Affiliations

  1. University Department of Physics, Tilkamanjhi Bhagalpur University, Bhagalpur, 812 007, India

    K. Prasad

  2. University Department of Chemistry, Tilkamanjhi Bhagalpur University, Bhagalpur, 812 007, India

    Anal K. Jha

  3. Department of Food Engineering and Technology, Sant Longowal Institute of Engineering and Technology, Longowal, Sangrur, 148 106, India

    Kamlesh Prasad

  4. Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology, Mumbai ñ, 400 076, India

    A. R. Kulkarni

Authors
  1. K. Prasad
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  2. Anal K. Jha
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  3. Kamlesh Prasad
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  4. A. R. Kulkarni
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Correspondence to K. Prasad.

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Prasad, K., Jha, A.K., Prasad, K. et al. Can microbes mediate nano-transformation?. Indian J Phys 84, 1355–1360 (2010). https://doi.org/10.1007/s12648-010-0126-8

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  • DOI: https://doi.org/10.1007/s12648-010-0126-8

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