Brazilian Journal of Microbiology | |
The relation between Escherichia coli surface functional groups' composition and their physicochemical properties | |
Fatima Hamadi2  Hassan Latrache2  Hafida Zahir2  Abderrahmene Elghmari1  Mohamed Timinouni1  Mostapha Ellouali2  | |
[1] ,FST L'environmental et la Santé Beni Mellal,Marocco | |
关键词: Escherichia coli; surface functional groups; hydrophobicity; electrophoretic mobility; Escherichia coli; grupos funcionais de superfície; hidrofobicidade; mobilidade eletroforética; | |
DOI : 10.1590/S1517-83822008000100003 | |
来源: SciELO | |
【 摘 要 】
Escherichia coli surface characteristics including hydrophobicity, electrophoretic mobility and surface functional groups' composition were investigated. These characteristics were determined respectively by water contact angle measurements, microelectrophoresis and x-ray photoelectron spectroscopy (XPS). The relation between the physicochemical properties and functional groups' composition was also examined. The electrophoretic mobility at pH 7 appeared to be governed on the cell surface by the (O=C) functional groups. The cell surface's hydrophilicity was associated with high levels of (C-(O.N)) and (OH-(C-O-C)) functional groups, whereas the cell surface's hydrophobicity was associated with (C-(C,H)) functional groups.
【 授权许可】
CC BY-NC
All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License
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