Listeria monocytogenes has emerged as a major foodborne pathogen for the seafood industry due to its psychrotrophic nature and its ubiquitous presence. It has been isolated from soil, sewage, dead vegetative matter, aquatic environments, fecal material, fish, crustaceans, and domesticated animals. As a result, L. monocytogenes has been responsible for several shrimp recalls and has been epidemiologically linked to human listeriosis.
Fresh seafood products are highly perishable and their shelf-life is limited by microbiological spoilage. Therefore, when pathogenic microorganisms are involved, it poses a health threat to the general public. The situation is further complicated because seafood processing plants are ideal environments for this organism to proliferate. As a result, this creates an ever growing potential for food safety issues.
Cetylpyridinium chloride (CPC) has been shown to have antimicrobial effects in decontaminating raw produce and poultry. Therefore, the objective of this study was to determine the effectiveness of cetylpyridinium chloride as a washing solution to inhibit L. monocytogenes growth on the surface of shrimp. Our studies have successfully shown the potential of cetylpyridinium chloride as a washing solution to reduce L. monocytogenes counts on the surface of raw and cooked shrimp stored at 4°C and -20°C. However, further investigations are necessary to determine its impact on sensory properties of shrimp as well as determining CPC residuals on the surface of raw and cooked shrimp. To date, the use of CPC has only been approved by the FDA at a level not to exceed 0.3 grams of CPC and should also contain propylene glycol at a concentration of 1.5 times that of the CPC per pound of raw poultry carcass.
| Identifer | oai:union.ndltd.org:LSU/oai:etd.lsu.edu:etd-07132005-125715 |
| Date | 15 July 2005 |
| Creators | Dupard, Tracie Michelle |
| Contributors | Fatemeh Malekian, Witoon Prinyawiwatkul, Jon Bell, Marlene Janes |
| Publisher | LSU |
| Source Sets | Louisiana State University |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lsu.edu/docs/available/etd-07132005-125715/ |
| Rights | unrestricted, I hereby certify that, if appropriate, I have obtained and attached herein a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to LSU or its agents the non-exclusive license to archive and make accessible, under the conditions specified below and in appropriate University policies, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. |
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