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Article

Effect of catalase on hydrogen peroxide penetration into Pseudomonas aeruginosa biofilms.

Applied and environmental microbiology - 1 Feb 2000

Stewart P S, Roe F, Rayner J, Elkins J G, Lewandowski Z, Ochsner U A, Hassett D J

Abstract excerpt

The penetration of hydrogen peroxide into biofilms formed by wild-type and catalase-deficient Pseudomonas aeruginosa strains was measured using microelectrodes. A flowing stream of hydrogen peroxide (50 mM, 1 h) was unable to penetrate or kill wild-type biofilms but did penetrate and partially kill biofilms formed by an isogenic strain in which the katA gene was knocked out. Catalase protects aggregated bacteria...

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Identifiers

PMID: 10653761
DOI: 10.1128/AEM.66.2.836-838.2000
PMCID: PMC91906

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

Source receipt: pubmed, retrieved 7 Sept 2026.

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