The resistance to detachment of dairy strains of Listeria monocytogenes from stainless steel by shear stress is related to the fluid dynamic characteristics of the location of isolation

Perni, Stefano; Aldsworth, Timothy G.; Jordan, Suzanne J.; Fernandes, Isabel; Barbosa, Maria Luisa; Sol, Manuela; Tenreiro, Rogério; Chambel, Lélia; Zilhão, Isabel; Barata, Belarmino; Adrião, Andreia; Faleiro, Maria Leonor; Andrew, Peter W.; Shama, Gilbert

doi:10.1016/j.ijfoodmicro.2007.03.002

Cited by 28 publications

(23 citation statements)

References 20 publications

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“…Interaction of bacterial cells with various surfaces has been studied for many years, especially with respect to biofouling. For instance, coating materials which have the ability to decrease bacterial attachment to the surface have many applications in medical implants, food processing, agriculture and ship design [31][32][33]. Many reports describe that seeding different bacterial strains onto similar surfaces results in different amounts of adherence [33,34].…”

Section: Introductionmentioning

confidence: 99%

“…For instance, coating materials which have the ability to decrease bacterial attachment to the surface have many applications in medical implants, food processing, agriculture and ship design [31][32][33]. Many reports describe that seeding different bacterial strains onto similar surfaces results in different amounts of adherence [33,34]. This difference could be related to the existence of different physicochemical characteristics between species and strains [35].…”

Section: Introductionmentioning

confidence: 99%

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Tunable conjugated polymers for bacterial differentiation

Golabi

Turner

Jager

2016

Sensors and Actuators B: Chemical

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A novel rapid method for bacterial differentiation is explored based on the specific adhesion pattern of bacterial strains to tunable polymer surfaces. Different types of counter ions were used to electrochemically fabricate dissimilar polypyrrole (PPy) films with diverse physicochemical properties such as hydrophobicity, thickness and roughness. These were then modulated into three different oxidation states in each case. The dissimilar sets of conducting polymers were Principal Component Analysis showed that each strain of bacteria had its own specific adhesion pattern. Hence, they could be discriminated by this simple, label-free method. , based on tunable polymer arrays combined with pattern recognition.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Tunable conjugated polymers for bacterial differentiation

Golabi

Turner

Jager

2016

Sensors and Actuators B: Chemical

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“…In order to characterize the relative cell-surface hydrophobicity of B12 and X7 cultures, a modified version of the microorganism adhesion to hydrocarbon (MATH) test [41] was employed. Busscher et al [8], Van der Mei [52], Doyle [14], and Ahimou et al [2] have all suggested that electrostatic interactions can influence the MATH test because of the negative charge of hydrocarbons such as hexadecane.…”

Section: Microbial Adhesion To Hydrocarbon Test (Math)mentioning

confidence: 99%

“…Irreversible adhesion was later described by Duanne [16] as bacteria locking onto the surface by production of exo-polysaccharides or other cell surface structures that complex with a substratum. Perni et al [41] concluded persistent strains of Listeria, i.e., strains routinely isolated over months to years from fluid dairy processing plants, were able to attach to surfaces with maximum adhesive strength following a short contact time. More recent work using atomic force microscopy (AFM) also suggests that multiple forces are involved in the process of bacterial attachment to surfaces, especially electrostatic interactions and hydrophobic interactions [1,36,51].…”

Section: Introductionmentioning

confidence: 99%

The role of surface charge and hydrophobicity in the attachment of Anoxybacillus flavithermus isolated from milk powder

Palmer

Flint

Schmid

et al. 2010

J Ind Microbiol Biotechnol

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The aim of the present study was to investigate the attachment mechanisms that enable the thermophile Anoxybacillus flavithermus (B12) to attach to stainless-steel surfaces. Passing a B12 culture through a column of stainless-steel chips, collecting the first cells to pass through, re-culturing, and repeating the process six times, resulted in the isolation of a mutant, labeled X7, with tenfold reduced ability to attach to stainless steel as well as a reduced ability to attach to plastic. A comparison of bacterial cell-surface properties indicated that X7 was less hydrophobic than its parental strain B12. Cell-surface charge measurements also suggest that X7 had a lower net-negative surface charge. Disruption of extracellular polysaccharides and DNA appeared to have no effect on the attachment process. Removal of surface proteins caused a reduction in attachment of both B12 and X7, suggesting surface protein involvement in attachment.

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“…Such flow systems are for instance the parallel plate flow cell (PPFC) (Bakker et al, 2003;Boonaert et al, 2002;Boulangé-Petermann et al, 2003Dufrêne et al, 1996;Sjollema, 1990) or the radial-flow cell (RFC) (Cozens-Roberts et al, 1990;Fowler and McKay, 1980;Fryer et al, 1985). The latter has been used recently to assess the removal of various soils from solid substrates under different wall shear stress ranges (Demilly et al, 2006;Jensen and Friis, 2004;Joscelyne and Trägardh, 1997;Klavenes et al, 2002;Perni et al, 2007). These studies show the influence of wall shear stress on soil removal under either laminar flow conditions, transitional flow conditions or turbulent flow conditions.…”

Section: Introductionmentioning

confidence: 99%