Influence of flow direction and flow rate on the initial adhesion of seven Listeria monocytogenes strains to fine polished stainless steel

Anne Skovager; Kathryn Whitehead; Henrik Siegumfeldt; Hanne Ingmer; Joanna Verran; Nils Arneborg

doi:10.1016/j.ijfoodmicro.2012.04.028

Influence of flow direction and flow rate on the initial adhesion of seven Listeria monocytogenes strains to fine polished stainless steel

Anne Skovager, Kathryn Whitehead, Henrik Siegumfeldt, Hanne Ingmer, Joanna Verran, Nils Arneborg

10 Citationer (Scopus)

3 Downloads (Pure)

Abstract

The effects of flow direction and shear stress on the adhesion of different strains of Listeria monocytogenes to fine polished stainless steel under liquid flow conditions were investigated. Furthermore, the relationship between cell surface properties and cell size and the initial adhesion rate (IAR) was studied. A method, including fluorescence microscopy and a flow perfusion system, was developed and used to examine the real-time initial cell adhesion of different L. monocytogenes species in situ to opaque surfaces under flow conditions. The results demonstrated that shear stress was the determining factor for the initial adhesion of L. monocytogenes under flow conditions. The flow direction in relation to the orientation of surface features (the scratches) could be disregarded. IARs were dependent on the shear stress and strain type. The strain EGDe, which had the lowest IAR, had the largest cell size, was the least hydrophobic and possessed the most electron-donating cell surface. Except for the L. monocytogenes strain EGDe, no clear correlations were found between the IAR and cell surface properties, or cell size. In conclusion, many factors may be involved in determining the initial adhesion of L. monocytogenes to stainless steel under flow conditions. Two of the main factors are flow rate/shear stress and strain specificity.

Originalsprog	Engelsk
Tidsskrift	International Journal of Food Microbiology
Vol/bind	157
Udgave nummer	2
Sider (fra-til)	174-181
Antal sider	8
ISSN	0168-1605
DOI	https://doi.org/10.1016/j.ijfoodmicro.2012.04.028
Status	Udgivet - 2 jul. 2012

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10.1016/j.ijfoodmicro.2012.04.028

Influence of flow direction and flow rate on the initial adhesion of seven Listeria monocytogenes strains to fine polished stainless steelForlagets udgivne version, 2,86 MB

Citationsformater

Influence of flow direction and flow rate on the initial adhesion of seven Listeria monocytogenes strains to fine polished stainless steel. / Skovager, Anne; Whitehead, Kathryn; Siegumfeldt, Henrik et al.

I: International Journal of Food Microbiology, Bind 157, Nr. 2, 02.07.2012, s. 174-181.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

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abstract = "The effects of flow direction and shear stress on the adhesion of different strains of Listeria monocytogenes to fine polished stainless steel under liquid flow conditions were investigated. Furthermore, the relationship between cell surface properties and cell size and the initial adhesion rate (IAR) was studied. A method, including fluorescence microscopy and a flow perfusion system, was developed and used to examine the real-time initial cell adhesion of different L. monocytogenes species in situ to opaque surfaces under flow conditions. The results demonstrated that shear stress was the determining factor for the initial adhesion of L. monocytogenes under flow conditions. The flow direction in relation to the orientation of surface features (the scratches) could be disregarded. IARs were dependent on the shear stress and strain type. The strain EGDe, which had the lowest IAR, had the largest cell size, was the least hydrophobic and possessed the most electron-donating cell surface. Except for the L. monocytogenes strain EGDe, no clear correlations were found between the IAR and cell surface properties, or cell size. In conclusion, many factors may be involved in determining the initial adhesion of L. monocytogenes to stainless steel under flow conditions. Two of the main factors are flow rate/shear stress and strain specificity.",

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AU - Skovager, Anne

AU - Whitehead, Kathryn

AU - Siegumfeldt, Henrik

AU - Ingmer, Hanne

AU - Verran, Joanna

AU - Arneborg, Nils

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N2 - The effects of flow direction and shear stress on the adhesion of different strains of Listeria monocytogenes to fine polished stainless steel under liquid flow conditions were investigated. Furthermore, the relationship between cell surface properties and cell size and the initial adhesion rate (IAR) was studied. A method, including fluorescence microscopy and a flow perfusion system, was developed and used to examine the real-time initial cell adhesion of different L. monocytogenes species in situ to opaque surfaces under flow conditions. The results demonstrated that shear stress was the determining factor for the initial adhesion of L. monocytogenes under flow conditions. The flow direction in relation to the orientation of surface features (the scratches) could be disregarded. IARs were dependent on the shear stress and strain type. The strain EGDe, which had the lowest IAR, had the largest cell size, was the least hydrophobic and possessed the most electron-donating cell surface. Except for the L. monocytogenes strain EGDe, no clear correlations were found between the IAR and cell surface properties, or cell size. In conclusion, many factors may be involved in determining the initial adhesion of L. monocytogenes to stainless steel under flow conditions. Two of the main factors are flow rate/shear stress and strain specificity.

AB - The effects of flow direction and shear stress on the adhesion of different strains of Listeria monocytogenes to fine polished stainless steel under liquid flow conditions were investigated. Furthermore, the relationship between cell surface properties and cell size and the initial adhesion rate (IAR) was studied. A method, including fluorescence microscopy and a flow perfusion system, was developed and used to examine the real-time initial cell adhesion of different L. monocytogenes species in situ to opaque surfaces under flow conditions. The results demonstrated that shear stress was the determining factor for the initial adhesion of L. monocytogenes under flow conditions. The flow direction in relation to the orientation of surface features (the scratches) could be disregarded. IARs were dependent on the shear stress and strain type. The strain EGDe, which had the lowest IAR, had the largest cell size, was the least hydrophobic and possessed the most electron-donating cell surface. Except for the L. monocytogenes strain EGDe, no clear correlations were found between the IAR and cell surface properties, or cell size. In conclusion, many factors may be involved in determining the initial adhesion of L. monocytogenes to stainless steel under flow conditions. Two of the main factors are flow rate/shear stress and strain specificity.

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