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Biofilm formation of Salmonella enteritidis on surfaces in the food industry
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M Mahdavi *   , R Kasra Kermanshahi , M Jalali |
| , Gmahdavi2002@yahoo.com |
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Abstract: (14277 Views) |
| Background and objective: Salmonella enteritidis is an important food-borne enteric pathogen. It is very resistant in the environment and remains an important cause of gastroenteritis in humans world-wide. It forms biofilms on many food contact surface materials. Development of biofilms on these surfaces is a potential source of contamination of foods which may lead to spoilage or transmission of food-borne pathogens. In this project biofilm formation by the Iranian species of Salmonella enteritidis RITCC 1624 on food and medical contact surfaces was assessed.
Material and methods: Firstl the hydrophobicity of S. enteritidis RITCC 1624 was measured by the Microbial Adhesion to Hydrocarbon method (MATH). Then biofilm formation by the organism was assessed after a lapse of 2, 4, 8, 16 and 20 hours on stainless steel type 304 no 2B, polyethelene, and on glass by the drop plate method.
Results: Resultes indicated that this organism, with 73% hydrophobicity, can form biofilm on all the three surfaces. Biofilm formation on glass and stainless steel surfaces within 2 hours was more than on polyethylen (P<0.05).increasing time to 20 h did not result in biofilm formation to a larger extent (P>0.05). Biofilm formation by S. enteritidis was most extensive on the interface between air and liquid phases.
Conclusion: Biofilm formation ability of S. enteritidis on the 3 surfaces increases the possibility of its transmiision, important from a hugienic and disease spreading viewpoint. |
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| Keywords: Biofilm, Salmonella enteritidis, Hydrophobicity |
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Full-Text [PDF 154 kb]
(2856 Downloads)
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Article type: Research |
Subject:
Food Science
Received: 2008/10/15 | Published: 2008/10/15
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