A comparison of thermodynamic approaches to predict the adhesion of dairy microorganisms to solid substrata

Bellon-Fontaine, M. N.; Mozes, Nava; Mei, van der Henny C.; Sjollema, Jelmer; Cerf, O.; Rouxhet, P. G.; Busscher, Henk J.

doi:10.1007/bf02989805

Cited by 100 publications

(46 citation statements)

References 33 publications

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“…Four standard liquids of water, 1-bromonaphtalene, diiodomethane and formamide were used. The values of liquids surface tension and the dispersive and polar part contributions to the surface energy, and the polar part divided into acid and base components of surface energy as reported in the literature were used [23,24].…”

Section: Mineralsmentioning

confidence: 99%

Surface Thermodynamics and Extended DLVO Theory of Acidithiobacillus ferrooxidans Cells Adhesion on Pyrite and Chalcopyrite

Vilinska¹,

Rao²

2009

TOCOLLSJ

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Abstract:The adhesion of Acidithiobacillus ferrooxidans bacterial cells have been assessed by following the thermodynamic and extended DLVO theoretical approaches. Surface potential, interfacial tension and contact angle parameters that are necessary for the calculation of free energy of adhesion have been determined experimentally. The Hamaker constant involved in the Lifshitz-van der Waals interaction energy has been estimated by microscopic and macroscopic methods.The free energy of adhesion found to be negative on pyrite and chalcopyrite minerals indicating the adsorption of bacterial cells on these minerals. The potential energy diagrams of total interaction energy versus separation distance curves also illustrate the feasibility of bacterial cells adhesion except in a pH region where the bacterial species and minerals possess similar surface charge with high magnitude. The present theoretical analysis of bacterial adhesion on mineral surfaces found to be in good agreement with the experimental results and previous findings in the literature. Thus, the bacterial adhesion behavior on minerals can be judged and explained by considering the physico-chemical interaction forces.

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Section: Mineralsmentioning

confidence: 99%

Surface Thermodynamics and Extended DLVO Theory of Acidithiobacillus ferrooxidans Cells Adhesion on Pyrite and Chalcopyrite

Vilinska¹,

Rao²

2009

TOCOLLSJ

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“…Bos et al, [12] in a review of work on bacterial adhesion, report on surface free energies and the polar and dispersive contributions to the SFE for water and diiodomethane, [48] which are the fluids used here with the Fowkes method. They also discuss polar, dispersive, and acid-base contributions to interfacial interaction energies and interactions.…”

Section: Surface Free Energy Determination Using Two Fluids and The Fmentioning

confidence: 99%

Optical Properties and van der Waals - London Dispersion Interactions of Polystyrene Determined by Vacuum Ultraviolet Spectroscopy and Spectroscopic Ellipsometry

et al. 2007

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The interband optical properties of polystyrene in the vacuum ultraviolet (VUV) region have been investigated using combined spectroscopic ellipsometry and VUV spectroscopy. Over the range 1.5-32 eV, the optical properties exhibit electronic transitions we assign to three groupings, E 1 , E 2 , and E 3 , corresponding to a hierarchy of interband transitions of aromatic (π → π*), non-bonding (n → π*, n → σ*), and saturated (σ → σ*) orbitals. In polystyrene there are strong features in the interband transitions arising from the side-chain π bonding of the aromatic ring consisting of a shoulder at 5.8 eV (E 1 ) and a peak at 6.3 eV (E 1 ), and from the σ bonding of the C-C backbone at 12 eV (E 3 ) and 17.1 eV (E 3 ). These E 3 transitions have characteristic critical point line shapes associated with one-dimensionally delocalized electron states in the polymer backbone. A small shoulder at 9.9 eV (E 2 ) is associated with excitations possibly from residual monomer or impurities. Knowledge of the valence electronic excitations of a material provides the necessary optical properties to calculate the van der Waals-London dispersion interactions using Lifshitz quantum electrodynamics theory and full spectral optical properties. Hamaker constants and the van der Waals-London dispersion component of the surface free energy for polystyrene were determined. These Lifshitz results were compared to the total surface free energy of polystyrene, polarity, and dispersive component of the surface free energy as determined from contact angle measurements with two liquids, and with literature values. The Lifshitz approach, using full spectral Hamaker constants, is a more direct determination of the van der Waals-London dispersion component of the surface free energy of polystyrene than other methods.

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“…Surface free energies were caloJlated according to two different approaches. These two approaches have been used by various authors to characterize bacterial surfaces and to predict bacterial adhesion at solid surfaces (13)(14)(15). Unfortunately, conflicting results were reported by these authors.…”

Section: Contact Angles and Surface Free Energiesmentioning

confidence: 99%

Physicochemical characterization ofEscherichia coli

et al. 1992

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Eight Escherichia coli strains were characterized by determining their adhesion to xylene, surface free energy, zeta potential, relative surface charge, and their chemical composition. The latter was done by applying X-ray photoelectron spectroscopy (XPS) and infrared spectroscopy OR). No relationship between the adhesion to xylene and the water contact angles of these strains was found. Three strains had significantly lower surface free energies than the other strains. Surface free energies were either obtained from polar and dispersion parts or from Lifshitz-van der Waals and acid/base parts of the surface free energy. A correlation (r = 0.97) between the polar parts and the electron-donor contributions to the acid/base part of the surface free energy was found. The zeta potentials of all strains, measured as a function of pH *Author to whom all correspondence and reprint requests should be addressed. Cell Biophysics 1 7Volume 20, 1992 18Harkes et al.(2-11), were negative. Depending on the zeta potential as a function of pH, three groups were recognized among the strains tested. A relationship (r = 0.84) was found between the acid/base component of the surface free energy and the zeta potential measured at pH = 7.4. There was no correlation between results of XPS and IR studies. Data from the literature of XPS and IR studies of the gram-positive staphylococci and streptococci were compared with data from the gram-negative E. coli used in this study. It appeared that in these three groups of bacteria, the polysaccharide content detected by IR corresponded well with the oxygen-to-carbon ratio detected by XPS.

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A comparison of thermodynamic approaches to predict the adhesion of dairy microorganisms to solid substrata

Cited by 100 publications

References 33 publications

Surface Thermodynamics and Extended DLVO Theory of Acidithiobacillus ferrooxidans Cells Adhesion on Pyrite and Chalcopyrite

Surface Thermodynamics and Extended DLVO Theory of Acidithiobacillus ferrooxidans Cells Adhesion on Pyrite and Chalcopyrite

Optical Properties and van der Waals - London Dispersion Interactions of Polystyrene Determined by Vacuum Ultraviolet Spectroscopy and Spectroscopic Ellipsometry

Physicochemical characterization ofEscherichia coli

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