Preparation of cobalt nanoparticles from polymorphic bacterial templates: A novel platform for biocatalysis

Eunjin Jang, Hyun Woo Shim, Bum Han Ryu, Deu Rae An, Wan Ki Yoo, Kyeong Kyu Kim, Dong Wan Kim, T. Doohun Kim

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Nanoparticles have gathered significant research attention as materials for enzyme immobilization due to their advantageous properties such as low diffusion rates, ease of manipulation, and large surface areas. Here, polymorphic cobalt nanoparticles of varied sizes and shapes were prepared using Micrococcus lylae, Bacillus subtilis, Escherichia coli, Paracoccus sp., and Haloarcula vallismortis as bacterial templates. Furthermore, nine lipases/carboxylesterases were successfully immobilized on these cobalt nanoparticles. Especially, immobilized forms of Est-Y29, LmH, and Sm23 were characterized in more detail for potential industrial applications. Immobilization of enzymes onto cobalt oxide nanoparticles prepared from polymorphic bacterial templates may have potential for efficient hydrolysis on an industrial-scale, with several advantages such as high retention of enzymatic activity, increased stability, and strong reusability.

Original languageEnglish
Pages (from-to)747-753
Number of pages7
JournalInternational Journal of Biological Macromolecules
Publication statusPublished - 2015 Nov 1


  • Biocatalysts
  • Cobalt oxide nanoparticles
  • Enzyme immobilization

ASJC Scopus subject areas

  • Structural Biology
  • Biochemistry
  • Molecular Biology
  • Economics and Econometrics
  • Energy(all)


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