Continuous-sterilization system that uses photosemiconductor powders.

Tadashi Matsunaga, R. Tomoda, T. Nakajima, N. Nakamura, T. Komine

研究成果: Article査読

335 被引用数 (Scopus)

抄録

We report a novel photochemical sterilization system in which Escherichia coli cells were sterilized with photosemiconductor powders (titanium oxide). For sterilization that could be used in practice, it was necessary to separate the TiO2 powders from the cell suspension. Therefore, semiconductor powders were immobilized on acetylcellulose membranes. We constructed a continuous-sterilization system consisting of a TiO2-immobilized acetylcellulose membrane reactor, a mercury lamp, and a masterflex pump. As a result, under the various sterilization conditions examined, E. coli (10(2) cells per ml) was sterilized to less than 1% survival when the cell suspension flowed in this system at a mean residence time of 16.0 min under irradiation (1,800 microeinsteins/m2 per s). We found that this system was reusable.

本文言語English
ページ(範囲)1330-1333
ページ数4
ジャーナルApplied and Environmental Microbiology
54
6
出版ステータスPublished - 1988 6
外部発表はい

ASJC Scopus subject areas

  • バイオテクノロジー
  • 環境科学(全般)
  • 微生物学

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