The prevalence of Listeria, Salmonella, Escherichia coli and E coli O157:H7 on bison carcasses during processing

被引:24
作者
Li, QZ [1 ]
Sherwood, JS [1 ]
Logue, CM [1 ]
机构
[1] N Dakota State Univ, Great Plains Inst Food Safety, Dept Vet & Microbiol Sci, Fargo, ND 58105 USA
关键词
prevalence; Listeria spp; Salmonella spp; E; coli; E-coli O157 : H7; bison carcasses; meat; foodborne; pathogen;
D O I
10.1016/j.fm.2003.12.006
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Bison meat is a relatively new, emerging meat species gaining increased popularity in the US and European meat markets, but little is known of its microflora or pathogens that may be present. This study was carried out to determine the incidence of the foodborne pathogens Listeria, Salmonella, Escherichia coli/E. coli O157:H7 on slaughtered bison and to evaluate the bison slaughter process. Bison carcass sampling was carried out at monthly intervals over a period of 1 year at a Bison processing facility in the Midwestern United States. A total of 355 Bison carcasses were sampled by surface swabbing the carcasses at five points on the production line: pre-dehiding, post-evisceration, post-USDA inspection, post-washing and 24 h chilled carcass. Overall, the prevalence of Listeria spp., Salmonella spp., E. coli and E. coli O157:H7 was 18.3%, 3.94%, 38.3% and 1.13%, respectively. The prevalence of Listeria spp. at each sampling point tested was 42.24%, 18.1%, 6.03%, 1.72% and 3.77% while the prevalence of E. coli at each sampling point was: 88.79%, 73.28%, 52.59%, 56.89% and 11.3%, respectively. The data obtained suggests that current antimicrobial intervention strategies used at the plant are relatively effective in reducing Listeria and E. coli contamination on bison carcasses to some extent, however further study is required to determine the influence of current slaughter practices on carcass contamination. The data reported in this study to the authors' knowledge is some of the first information reporting on the bacteriological status of Bison, and provides some useful baseline information for future research. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码:791 / 799
页数:9
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