RRC ID 27843
著者 Ohko Y, Nagao Y, Okano K, Sugiura N, Fukuda A, Yang Y, Negishi N, Takeuchi M, Hanada S.
タイトル Prevention of Phormidium tenue Biofilm Formation by TiO(2) Photocatalysis.
ジャーナル Microbes Environ
Abstract We showed that the photocatalytic effect of a coating of TiO(2) greatly reduces the formation of a biofilm by Phormidium tenue (P. tenue), a filamentous cyanobacterium, on glass plates. Sample plates were immersed in P. tenue culture solution (OD(730)=0.3) under concurrent illumination with white fluorescent (WF) and UV light (0.3 mW cm(-2), each) for 11 days. TiO(2)-coated glass plates showed greatly reduced adhesion of P. tenue over 11 days compared to bare plates. The number of P. tenue adhering to bare glass plates increased to over 10(6) cells cm(-2) in 6 days. The photocatalytic anti-biofilm effect was also observed under WF light, although it was small and lasted only a few days. The addition of 1 mM mannitol, a scavenger for the hydroxyl radical (·OH), suppressed the effect. The surface of TiO(2)-coated plates was maintained in a highly hydrophilic state for 11 days, regardless of the addition of mannitol. Therefore, we conclude that the photocatalytic oxidation of P. tenue is effective in preventing the formation of a biofilm.
巻・号 24(3)
ページ 241-5
公開日 2009-1-1
DOI 10.1264/jsme2.me09106
PII JST.JSTAGE/jsme2/ME09106
PMID 21566379
IF 2.575
引用数 10
WOS 分野 BIOTECHNOLOGY & APPLIED MICROBIOLOGY MICROBIOLOGY
リソース情報
藻類 NIES-512