a Laboratory of Bioprocess and Biointerfaces, Faculty of Sciences and Techniques , Sultan Moulay Slimane University , Beni Mellal , Morocco.
b Laboratory of Water Microbiology and Environmental Hygiene , Institut Pasteur du Maroc , Casablanca , Morocco.
Int J Environ Health Res. 2018 Apr;28(2):125-133. doi: 10.1080/09603123.2018.1429580. Epub 2018 Jan 29.
We aimed to investigate the adhesion of Legionella pneumophila serogroup1 and L. pneumophila serogroup2-15 on glass, galvanized steel, stainless steel, copper, Polyvinyl chloride(PVC), Cross-linked polyethylene(PEX-c) and Polypropylene Random Copolymer(PPR). The surface physicochemical properties of both bacterial cells and materials were estimated through contact angle measurements. The roughness and surface topography of the materials were evaluated by Atomic Force Microscopy. The two L. pneumophila serogroups and plumbing materials showed a hydrophobic character, while glass surface was hydrophilic. All strains were adhered to all materials with the exception of copper. The result showed that the adhesion of both L. pneumophila sg1 and sg2-15 was systematically expressed with high intensity on galvanized steel followed by PVC, PEX-c, PPR, stainless steel and the low intensity on glass. The extent of adhesion is in correlation with the surface roughness and acid-bases interactions, while hydrophobicity seems to have no effect in adhesion intensity.
我们旨在研究嗜肺军团菌 1 血清群和 2-15 血清群在玻璃、镀锌钢、不锈钢、铜、聚氯乙烯（PVC）、交联聚乙烯（PEX-c）和无规共聚聚丙烯（PPR）上的黏附。通过接触角测量来评估细菌细胞和材料的表面物理化学性质。通过原子力显微镜评估材料的粗糙度和表面形貌。两种嗜肺军团菌血清群和管道材料表现出疏水性，而玻璃表面具有亲水性。除了铜之外，所有菌株都能黏附在所有材料上。结果表明，除了铜之外，两种嗜肺军团菌 sg1 和 sg2-15 的黏附均表现出高强度黏附在镀锌钢上，其次是 PVC、PEX-c、PPR、不锈钢，而在玻璃上的黏附强度较低。黏附程度与表面粗糙度和酸碱相互作用有关，而疏水性似乎对黏附强度没有影响。
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