title: The relation between Escherichia coli surface functional groups' composition and their physicochemical properties.
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.
authors.affiliation: Equipe de recherche: Microbiologie et biochimie appliquée á L'agroalimentaire, L'environmental et la Santé, FST , Beni Mellal , Marocco.
authors.forename: Fatima
authors.initials: F
authors.lastname: Hamadi
authors.forename: Hassan
authors.initials: H
authors.lastname: Latrache
authors.forename: Hafida
authors.initials: H
authors.lastname: Zahir
authors.forename: Abderrahmene
authors.initials: A
authors.lastname: Elghmari
authors.forename: Mohamed
authors.initials: M
authors.lastname: Timinouni
authors.forename: Mostapha
authors.initials: M
authors.lastname: Ellouali
keywords: Escherichia coli; electrophoretic mobility; hydrophobicity; surface functional groups
references.citation: J Gen Microbiol. 1992 Dec;138(12):2707-14
references.pmid: 1487734
references.citation: New Microbiol. 2002 Jan;25(1):75-82
references.pmid: 11837394
references.citation: Appl Environ Microbiol. 1989 Apr;55(4):832-6
references.pmid: 2499255
references.citation: Yeast. 1997 Aug;13(10):931-43
references.pmid: 9271108
references.citation: Methods Enzymol. 1999;310:375-89
references.pmid: 10547806
references.citation: J Bacteriol. 1993 Aug;175(16):5135-44
references.pmid: 8349553
references.citation: Appl Environ Microbiol. 1991 Jan;57(1):190-3
references.pmid: 16348394
references.citation: Biochim Biophys Acta. 1988 Nov 22;945(2):324-34
references.pmid: 3191127
references.citation: N Engl J Med. 1982 Sep 9;307(11):637-42
references.pmid: 7110215
references.citation: Arch Oral Biol. 1989;34(11):889-94
references.pmid: 2610623
references.citation: Appl Environ Microbiol. 2000 Jun;66(6):2548-54
references.pmid: 10831437
references.citation: Appl Environ Microbiol. 1984 Nov;48(5):980-3
references.pmid: 6508312
references.citation: Cell Biophys. 1992 Feb;20(1):99-110
references.pmid: 1284785
references.citation: Microbes Infect. 2000 Apr;2(4):391-400
references.pmid: 10817641
references.citation: Appl Environ Microbiol. 1987 Aug;53(8):1893-7
references.pmid: 2444158
references.citation: Adv Dent Res. 1997 Nov;11(4):388-94
references.pmid: 9470495