Indian Journal of Physics

, Volume 84, Issue 10, pp 1355–1360 | Cite as

Can microbes mediate nano-transformation?

  • K. Prasad
  • Anal K. Jha
  • Kamlesh Prasad
  • A. R. Kulkarni
Article
First Online:

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.

Keywords

Metallic nanoparticle Oxide nanoparticle Bio-nanotechnology Green approach 
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Copyright information

© Indian Association for the Cultivation of Science 2010

Authors and Affiliations

  • K. Prasad
    • 1
  • Anal K. Jha
    • 2
  • Kamlesh Prasad
    • 3
  • A. R. Kulkarni
    • 4
  1. 1.University Department of PhysicsTilkamanjhi Bhagalpur UniversityBhagalpurIndia
  2. 2.University Department of ChemistryTilkamanjhi Bhagalpur UniversityBhagalpurIndia
  3. 3.Department of Food Engineering and TechnologySant Longowal Institute of Engineering and TechnologyLongowalIndia
  4. 4.Department of Metallurgical Engineering and Materials ScienceIndian Institute of TechnologyMumbai ñIndia

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