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Applied and Environmental Microbiology, December 1999, p. 5328-5333, Vol. 65, No. 12
0099-2240/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
Listeria monocytogenes Scott A: Cell
Surface Charge, Hydrophobicity, and Electron Donor and Acceptor
Characteristics under Different Environmental Growth
Conditions
Romain
Briandet,1,2,*
Thierry
Meylheuc,1
Catherine
Maher,3 and
Marie
Noëlle
Bellon-Fontaine1
Institut National de la Recherche
Agronomique, Unité de Recherche en Bioadhesion et Hygiène
des Materiaux, Massy,1 and SKW
Biosystems, Cultures & Enzymes Department, La Ferté sous
Jouarre,2 France, and University
College, Cork, Ireland3
Received 9 November 1998/Accepted 15 September 1999
We determined the variations in the surface physicochemical
properties of Listeria monocytogenes Scott A cells that
occurred under various environmental conditions. The surface charges,
the hydrophobicities, and the electron donor and acceptor
characteristics of L. monocytogenes Scott A cells were
compared after the organism was grown in different growth media and at
different temperatures; to do this, we used microelectrophoresis and
the microbial adhesion to solvents method. Supplementing the growth
media with glucose or lactic acid affected the electrical, hydrophobic,
and electron donor and acceptor properties of the cells, whereas the
growth temperature (37, 20, 15, or 8°C) primarily affected the
electrical and electron donor and acceptor properties. The nonlinear
effects of the growth temperature on the physicochemical properties of the cells were similar for cells cultivated in two different growth media, but bacteria cultivated in Trypticase soy broth supplemented with 6 g of yeast extract per liter (TSYE) were slightly more hydrophobic than cells cultivated in brain heart infusion medium (P < 0.05). Adhesion experiments conducted with
L. monocytogenes Scott A cells cultivated in TSYE at 37, 20, 15, and 8°C and then suspended in a sodium chloride solution
(1.5 × 10
1 or 1.5 × 10
3 M NaCl)
confirmed that the cell surface charge and the electron donor and
acceptor properties of the cells had an influence on their attachment
to stainless steel.
*
Corresponding author. Mailing address: INRA UBHM,
25 Avenue République, 91300 Massy, France. Phone: 33 1 69 53 64 00. Fax: 33 1 60 13 36 01. E-mail:
briandet{at}massy.inra.fr.
Applied and Environmental Microbiology, December 1999, p. 5328-5333, Vol. 65, No. 12
0099-2240/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
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