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Effect of Four Chicken Carcass Transportation Methods at Selected Room Temperatures on the Bacterial Load of Staphylococcus aureus, Salmonella Species, and Escherichia coli | ||
| Archives of Razi Institute | ||
| مقاله 3، دوره 73، شماره 2، شهریور 2018، صفحه 95-106 اصل مقاله (275.58 K) | ||
| نوع مقاله: Original Articles | ||
| شناسه دیجیتال (DOI): 10.22092/ari.2018.116617 | ||
| نویسندگان | ||
| N. Hosseinnezhad؛ H. Ahari* ؛ A. Akhondzadeh | ||
| Department of Food Science and Technology, Science and Research Branch, Islamic Azad University, Tehran, Iran | ||
| چکیده | ||
| Pathogenic bacteria are responsible for a significant number of food poisonings in humans through infected poultries. The main objective of this study was to assess the effect of transportation of chicken carcasses at 18-24, 4-5, and 10-14 oC on the bacterial loads of Staphylococcus aureus, Salmonella species, and Escherichia coli. This study was conducted on 180 fresh chicken carcasses (1197.0±19.88 g) randomly collected from a commercial poultry processing plant in southern Tehran, Iran, in a hot season in 2015. The sampling was performed at two stages, namely post-chilled washing and after 4 h of transportation. In the latter stage, the samples were selected from three vehicles with three types of temperatures. These vehicles included a pickup (18-24 oC), a refrigerated car (4-5 oC), and a refrigerated vehicle with switched off refrigerator (10-14 oC). According to the results, the whole body carcass samples transported at the pickup temperature had the highest mean total count (18.63×106±2.82×106 cfu.ml-1) and was greater (P<0.05) than the standard limit (5×106). On the other hand, the samples carried by the vehicle with switched off refrigerator had the lowest total count (0.65±0.04×106 cfu.ml-1). Similar results were obtained for S. aureus; accordingly, it reached the maximum (333.0±30.73 cfu.ml-1) at 18-24 oC, which was lower than the national standard limit even after 4 h of transportation. In addition, the cfu values for the total count and S. aureus sampled from the chicken carcasses were lower than the national standard level even after 4 h of carcass transportation, with the exception of Salmonella spp. at the three vehicle temperatures and E. coli at the pickup temperature. It was suggested that the transportation temperature of less than 10-14 oC could not affect the fresh chicken carcass to be contaminated with S. aureus and E. coli. | ||
| کلیدواژهها | ||
| Salmonella؛ E. coli؛ Staphylococcus aureus poisoning؛ chicken transportation | ||
| عنوان مقاله [English] | ||
| تاثیر چهار روش حمل و نقل لاشه مرغ در دماهای انتخابی اتاق نسبت به عوامل باکتریایی استافیلوکوکوس ارئوس و انواع سالمونلا و اشرشیا کلی | ||
| نویسندگان [English] | ||
| ندا حسین زاده؛ حامد اهری؛ افشین آخوندزاده بستی | ||
| گروه علوم غذایی و فناوری، واحد علوم و تحقیقات، دانشگاه آزاد اسلامی تهران، تهران، ایران | ||
| چکیده [English] | ||
| باکتریهای بیماریزای انسانی عامل شمار زیادی از مسمومیتهای غذایی در انسان طی مصرف گوشت ماکیان آلوده میباشند. هدف از این مطالعه، بررسی تأثیر شستشو (چیلر دوم) در کشتارگاه و حمل لاشهها در دماهای متفاوت تا محل عرضه بر میزان بار میکروبی استافیلوکوکوس اورئوس، سالمونلا و اشریشیا کلی در لاشه مرغ میباشد. نمونه برداری از تعداد 180 لاشه مرغ به طور تصادفی از کشتارگاهی در جنوب تهران بعد از مرحله شستشوی نهایی (چیلر دوم) در کشتارگاه، تا محل عرضه توسط خودروی معمولی (دمای محیط)، خودرو با سردخانه خاموش و سردخانهدار انجام پذیرفت. نتایج نشان داد که میزان آلودگی اشرشیا کلی و شمارش کلی باکتریایی در مرحله بعد از لاشهپذیری به طور معناداری بیشتراز مرحله قبل از لاشهپذیری بود. میانگین مقادیر باکتریایی شمارش شده در نمونههای کشتارگاه (گروه قبل)، به جز سالمونلا در نمونه ساق ران در خودروی سردخانهدار، به طور قابل توجهی کمتر از نمونههای حمل شده پس از 4 ساعت (گروه بعد) بودند، همچنین میانگین شمارش کلی میکروبی و استافیلوکوکوس اورئوس لاشههای حمل شده توسط خودروی معمولی به حداکثر رسید(106×82/2 ±106×63/18) که میانگین شمارش کلی میکروبی نسبت به مقدار استاندارد بالاتر بود(106×5)(05/0≥ p)، در حالی که در خودروی سردخانه خاموش این مقدار به حداقل رسید که نسبت به مقدار استاندارد کمتر بود(106×048/0±106×65/0). به طور کلی نتایج به دست آمده نشان داد که حمل لاشههای مرغ توسط خودروهای معمولی و سردخانه خاموش شرایط محیطی نامناسبی را برای رشد لگاریتمی باکتریهای پاتوژن غذایی فراهم میکند و موجب انتقال آنها به انسان میگردد. | ||
| کلیدواژهها [English] | ||
| سالمونلا, ایکلای, مسمومیت استافیلوکوکوس ارئوس, سیستم حمل و نقل مرغ | ||
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