کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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4368110 | 1616683 | 2010 | 6 صفحه PDF | دانلود رایگان |
This study evaluates the antimicrobial effectiveness of ε-polylysine against Escherichia coli O157:H7, Salmonella typhimurium and Listeria monocytogenes in laboratory media and roast beef slurry. ε-Polylysine supplemented laboratory media and roast beef slurry were inoculated with three-strain cocktails of each pathogen and survival was periodically monitored using conventional spread plating. Inoculated laboratory media was stored at room temperature (22 °C) for 48 h, and inoculated roast beef slurry was stored at 4 °C for up to 7 days. Maximum log reductions in laboratory media/roast beef slurry were 6.01 ± 1.43/3.81 ± 0.37, > 7.82 ± 0.05/5.23 ± 0.08, and 4.58 ± 0.86/5.83 ± 0.48 for E. coli O157:H7, S. tyhimurium, and L. monocytogenes, respectively. Injured cells were produced as a result of exposure to polylysine. This study confirms the effectiveness of polylysine against pathogens in laboratory media, and demonstrates its potential as a novel antimicrobial agent in complex food matrix such as roast beef.
Journal: International Journal of Food Microbiology - Volume 141, Issue 3, 15 July 2010, Pages 236–241