|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|5740092||1412156||2018||8 صفحه PDF||ندارد||دانلود کنید|
â¢Salmonella spp. migration in poultry meat was assessed under different conditions.â¢Serovars Enteritidis and Heidelberg migrated inside meat samples within 6Â h.â¢Migration was not facilitated by the presence of proteolytic psychrotrophs.â¢Freezing of meat samples did not inhibit bacterial migration.â¢Consumption of undercooked poultry meat is hazardous.
Salmonella spp. have been shown to migrate to the internal regions of meat cuts. Storage conditions and the presence of proteolytic microbiota can influence this process. Our study assessed the impact of storage time, temperature, and the presence of proteolytic psychrotrophic bacteria on migration. Samples of previously frozen chicken breast with skin and bone were then sterilized using gamma ray irradiation and a cobalt-60 source (11Â KGy) and them were inoculated with cultures of S. Enteritidis, S. Enteritidis and psychrotrophs, S. Heidelberg, or S. Heidelberg and psychrotrophs. Inoculated samples were stored for 6, 12, 24, 48, or 168Â hÂ at 2, 7, orÂ â30Â Â°C. After treatment, samples were divided into similar-sized segments and bacterial counts were determined in different regions (A â superface, B â intermediate region, and C â internal region). S. Heidelberg and S. Enteritidis both demonstrated successful internal migration for each time, temperature, and bacterial combination (pÂ <Â 0.05). Our data revealed that Salmonella migration proceeded for 24Â h, but slowed at 48Â h (pÂ <Â 0.05). S. Enteritidis with psychrotrophs showed a low amount of internal migration (pÂ <Â 0.05). We therefore conclude that Salmonella spp. are able to migrate into the internal regions of meat cuts in a short period of time, even at low temperatures. The presence of proteolytic psychrotrophs inhibits the migration of S. Enteritidis.
Journal: Food Microbiology - Volume 69, February 2018, Pages 204-211