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Titolo:
Listeria monocytogenes adheres to many materials found in food-processing environments
Autore:
Beresford, MR; Andrew, PW; Shama, G;
Indirizzi:
Univ Loughborough, Dept Chem Engn, Loughborough LE11 3TU, Leics, England Univ Loughborough Loughborough Leics England LE11 3TU 3TU, Leics, England Univ Leicester, Dept Microbiol & Immunol, Leicester LE1 7RH, Leics, England Univ Leicester Leicester Leics England LE1 7RH er LE1 7RH, Leics, England
Titolo Testata:
JOURNAL OF APPLIED MICROBIOLOGY
fascicolo: 6, volume: 90, anno: 2001,
pagine: 1000 - 1005
SICI:
1364-5072(200106)90:6<1000:LMATMM>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
BUNA-N RUBBER; STAINLESS-STEEL; SALMONELLA-TYPHIMURIUM; EPIDEMIC LISTERIOSIS; SURFACES; ATTACHMENT; GROWTH; BIOFILMS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Shama, G Univ Loughborough, Dept Chem Engn, Loughborough LE11 3TU, Leics, England Univ Loughborough Loughborough Leics England LE11 3TU s, England
Citazione:
M.R. Beresford et al., "Listeria monocytogenes adheres to many materials found in food-processing environments", J APPL MICR, 90(6), 2001, pp. 1000-1005

Abstract

Aims: To investigate the adhesion of Listeria monocytogenes 10403S to 17 different, food-use approved materials representing metals, rubbers and polymers. Methods and Results: Adhesion assays were conducted by placing 'coupons' of the materials in planktonic cultures at 30 degreesC, and then immediatelywithdrawing them ('short contact') or leaving them submerged in the cultures for 2 h. Adherent cells were recovered by sonication. In the short contact experiments, the logarithm of the mean viable counts: ranged from 3.67 +/- 0.43 to 4.78 +/- 0.38. After 2 h contact time, the numbers of adherent cells had increased significantly for all materials with the exception of polypropylene. The highest count (6.33 +/- 0.31) recorded was for stainless steel 405. Conclusions: Adhesion to a wide range of materials was time-dependent and.characterized bg reversible and irreversible stages. Significance and Impact of the Study: Adhesion test protocols must accountfor cell carryover and cells which are only weakly bound. Material selection may only have a limited role in reducing food contamination by listeria.

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Documento generato il 04/04/20 alle ore 21:37:25