The effects of peptidoglycan on the photocatalytic bactericidal activity of titanium dioxide

Ayano Takao, Tomonori Suzuki

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

For the elucidation of the mechanism underlying the photocatalytic bactericidal activity of titanium dioxide (TiO2), we focused on the peptidoglycan layer, a component of the bacterial cell wall. The effect of this layer on the photocatalytic bactericidal activity of TiO2was evaluated by determining the survival rates of Lactobacillus plantarum(intact cells) and its protoplast cells. Mesoplasma florum, which does not originally possess the peptidoglycan layer, was also used. Our results revealed that the survival rates of the intact cells were lower than those of the protoplast cells. In addition, there was no significance between the survival rates of M. florum cells and the protoplast cells of L. plantarum. It was suggested that the presence of the peptidoglycan layer increases the bactericidal effect by the photocatalysis.

Original languageEnglish
Pages (from-to)167-171
Number of pages5
JournalBiocontrol Science
Volume25
Issue number3
DOIs
Publication statusPublished - Sep 2020

Keywords

  • Bactericidal effect
  • Peptidoglycan
  • Photocatalysis
  • Protoplast
  • TiO

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