Effects of Carcass Washing Systems on Campylobacter Contamination in Large Broiler Processing Plants

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dc.contributor.advisorKevin Keener, Committee Co-Chairen_US
dc.contributor.advisorPat Curtis, Committee Co-Chairen_US
dc.contributor.advisorBrian Sheldon, Committee Memberen_US
dc.contributor.advisorSophia Kathariou, Committee Memberen_US
dc.contributor.authorBashor, Michael Paulen_US
dc.date.accessioned2010-04-02T18:15:57Z
dc.date.available2010-04-02T18:15:57Z
dc.date.issued2003-06-19en_US
dc.degree.disciplineFood Scienceen_US
dc.degree.levelthesisen_US
dc.degree.nameMSen_US
dc.description.abstractCampylobacter, a major food borne pathogen found in poultry products, remains a serious problem facing poultry processors. Campylobacter research has primarily focused on detection methods, prevalence and detection on carcasses, with limited research conducted on intervention. The aim of this study was to assess the effectiveness of carcass washing systems in four large broiler-processing plants in removing Campylobacter species. Washing systems evaluated included combinations of inside/outside carcass washers and homemade cabinet washers. Processing aids evaluated were trisodium phosphate (TSP) and acidified sodium chlorite (ASC). The washer systems consisted of 1 to 3 carcass washers and used from 0.57 to 2.57 gallons of water per carcass. The washer systems used chlorinated water with 25 to 35 ppm of total chlorine. These washer systems on average reduced Campylobacter populations log 0.5 cfu/ml from log 4.8 cfu/ml to log 4.3 cfu/ml. Washer systems with TSP or ASC reduced Campylobacter populations on average by an additional log 1.03 to log 1.26 respectively. Total average reductions in Campylobacter populations across the washer system and chill tank were log 0.76 cfu/ml. Washer systems that included antimicrobial systems had total average reductions in Campylobacter populations of log 1.53 cfu/ml. These results suggest that carcass washer systems consisting of multiple washers provide minimal reductions in Campylobacter populations found on poultry in processing plants. A more effective treatment for reducing Campylobacter populations is ASC or TSP treatments; however, these reductions, while significant, will not eliminate the organism from raw poultry.en_US
dc.identifier.otheretd-05132003-110450en_US
dc.identifier.urihttp://www.lib.ncsu.edu/resolver/1840.16/2618
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto 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 NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, 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.en_US
dc.subjectfood safetyen_US
dc.subjectpoultry processingen_US
dc.subjectantimicrobialen_US
dc.subjectpoultry carcass washersen_US
dc.subjectCampylobacteren_US
dc.titleEffects of Carcass Washing Systems on Campylobacter Contamination in Large Broiler Processing Plantsen_US

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