Studies of inactivation of encephalomyocarditis virus, M13 bacteriophage, and Salmonella typhimurium by using a visible femtosecond laser: Insight into the possible inactivation mechanisms

  • Kong T. Tsen
  • , Shaw Wei D. Tsen
  • , Qiang Fu
  • , Stuart M. Lindsay
  • , Zhe Li
  • , Stephanie Cope
  • , Sara Vaiana
  • , Juliann G. Kiang

Research output: Contribution to journalArticlepeer-review

36 Scopus citations

Abstract

We report experimental results on the inactivation of encephalomyocarditis virus, M13 bacteriophage, and Salmonella typhimurium by a visible femtosecond laser. Our results suggest that inactivation of virus and bacterium by a visible femtosecond laser involves completely different mechanisms. Inactivation of viruses by a visible femtosecond laser involves the breaking of hydrogen/hydrophobic bonds or the separation of the weak protein links in the protein shell of a viral particle. In contrast, inactivation of bacteria is related to the damage of their DNAs due to irradiation of a visible femtosecond laser. Possible mechanisms for the inactivation of viruses and bacteria are discussed.

Original languageEnglish
Article number078003
JournalJournal of biomedical optics
Volume16
Issue number7
DOIs
StatePublished - Jul 2011

Keywords

  • Bacteria
  • Femtosecond lasers
  • Inactivation of viruses
  • Irradiation

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