Continuous-sterilization system that uses photosemiconductor powders.
AUTOR(ES)
Matsunaga, T
RESUMO
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.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=202658Documentos Relacionados
- Blood and urine concentrations of aluminium among workers exposed to aluminium flake powders.
- Novel approach to bacterial identification that uses the autobac system.
- A conditional self-inactivating retrovirus vector that uses a tetracycline-responsive expression system.
- An in vitro system for infection with hepatitis B virus that uses primary human fetal hepatocytes.
- Microneutralization test for influenza A and B and parainfluenza 1 and 2 viruses that uses continuous cell lines and fresh serum enhancement.