alexa Influence of surface chemistry on the hygienic status of industrial stainless steel.
Engineering

Engineering

Journal of Civil & Environmental Engineering

Author(s): BoulangePetermann L, Jullien C, Dubois PE, Benezech T, Faille C

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Abstract Coupons of fourteen different stainless steels were investigated in terms of surface chemistry and ease of cleaning. Steel surfaces were exposed to Bacillus cereus spores in static saline solution for 2 h. Surfaces were rinsed and then covered with whole milk and allowed to dry. Surfaces were then cleaned in an experimental flow system that mimics an industrial application. After cleaning, remaining spores were released by sonication, spores cultured and colony forming units determined. Surfaces with higher levels of Fe in the outer surface of the passive film cleaned more easily. There was a relation between the polar component and ease of cleaning. The higher the polar component the more easily the surface cleaned. The cleaning mechanism involves dissolution of Fe enriched hydroxide films on the surface. This article was published in Biofouling and referenced in Journal of Civil & Environmental Engineering

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