Plasma-Mediated Modification of Austenitic Stainless Steel: Application to the Prevention of Yeast Adhesion

Abstract : The work is focused on defining a stainless steel surface treatment to prevent microbial adhesion. The yeast Saccharomyces cerevisiae was selected as the model for eukaryotic cells. Different surface cleaning procedures, including chemical and plasma-mediated treatments, were studied. Detachment experiments displayed no modification in yeast adhesion, despite significant variations in the physico-chemical properties of the solid surface. Plasma-mediated thin coatings (~375 nm) were then deposited on stainless steel applying hexamethyldisiloxane/oxygen plasma. FT-IR study revealed a dense Si-O-Si network, while XPS analysis detected no more iron or chromiumat the extreme surface. Detachment experiments demonstrated that these films were successful in preventing cell adhesion, due to a barrier effect.
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Submitted on : Tuesday, July 18, 2017 - 11:45:48 AM
Last modification on : Friday, October 11, 2019 - 8:23:13 PM

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Claire Saulou, Bernard Despax, Patrice Raynaud, Sandrine Zanna, Philippe Marcus, et al.. Plasma-Mediated Modification of Austenitic Stainless Steel: Application to the Prevention of Yeast Adhesion. Plasma Processes and Polymers, Wiley-VCH Verlag, 2009, 6 (12), pp.813-824. ⟨10.1002/ppap.200900069⟩. ⟨hal-01563848⟩

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