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The relation between Escherichia coli surface functional groups' composition and their physicochemical properties.

Authors
  • Hamadi, Fatima
  • Latrache, Hassan
  • Zahir, Hafida
  • Elghmari, Abderrahmene
  • Timinouni, Mohamed
  • Ellouali, Mostapha
Type
Published Article
Journal
Brazilian Journal of Microbiology
Publisher
Elsevier
Publication Date
Jan 01, 2008
Volume
39
Issue
1
Pages
10–15
Identifiers
DOI: 10.1590/S1517-83822008000100003
PMID: 24031168
Source
Medline
Keywords
License
Unknown

Abstract

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.

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