New major publication of the PCS Team in Biointerphases
Publication / Recherche
15 septembre 2020
The PCS Team (équipe de Physico-Chimie des Surfaces) – IRCP has just published in the scientific journal Biointerphases an important article « Early stage of marine biofilm formation on duplex stainless steel » which was the subject of a « Scilight » entitled Biofilm formation causes surface changes to stainless.
ABSTRACT. The aim of this work was to investigate the bacteria-surface interactions occurring during the first hour of adhesion of marine Pseudoalteromonas NCIMB 2021 at the surface of 2304 lean duplex stainless steel in artificial seawater. A complete characterization of the biofilm and the passive film was performed coupling epifluorescence microscopy, scanning electron microscopy (SEM), x-ray photoelectron spectroscopy (XPS), and time of flight secondary ion mass spectrometry (ToF-SIMS). The coupling of XPS and ToF-SIMS analyses revealed that (1) protein and polysaccharide contents in the biofilm are similar in the presence or absence of nutrients, (2) the biofilm is mainly composed of proteins and the protein content is similar to the one of Tightly Bound EPS, (3) increased bacterial activity due to nutrients leads to chromium enrichment in the passive film in close vicinity to the bacteria.
COVER. The article « Early stage of marine biofilm formation on duplex stainless steel » by the PCS team was featured on the cover of Biointerphases ! The article was also the subject of a AIP « SciLight ».
SCILIGHT. Scilights showcase the most interesting research across the physical sciences published in AIP Publishing Journals. A Scilight, a science highlight, briefly summarizes newly published research, emphasizing its significance to a particular field. Scilights are written to ‘intrigue’ a broad scientific audience showcasing what is new and important in the latest research.