Veterinary Public Health Inspection Service, Department of Agriculture, Food and the Marine, Agriculture House, Kildare Street, Dublin 2, Ireland; NICHE, School of Biomedical Science, University of Ulster, Coleraine, Northern Ireland; School of Agriculture, Food Science and Veterinary Medicine, University College Dublin, Belfield, Dublin, Ireland.
NICHE, School of Biomedical Science, University of Ulster, Coleraine, Northern Ireland; School of Agriculture, Food Science and Veterinary Medicine, University College Dublin, Belfield, Dublin, Ireland.
Meat Sci. 2014 Aug;97(4):486-9. doi: 10.1016/j.meatsci.2014.03.009. Epub 2014 Mar 24.
Preventing microbial contamination during dehiding is challenging, and skinning methods are of critical importance for the hygienic status of beef carcasses. Two skinning methods are usually employed: upward hide pulling (UHP) and downward hide pulling (DHP). This study has compared the microbiological contamination of carcasses using both systems in a beef processing plant in the process of changing its dehiding method from UHP to DHP. 100 cm(2) areas from eight carcass sites (ham, chuck, rump, bung, flank, brisket, shin and neck) were sampled on 36 skinned carcasses dehided by each technique. Total viable counts (TVCs) and Enterobacteriaceae counts for each site were determined. No significant differences were observed in total (pooled-samples) carcass contamination regardless of the method used. However, significant differences (p<0.05) in TVCs were observed at the flank, shin, brisket and neck. These differences can be attributed to possible deficiencies in the implementation of the HACCP pre-requisite programmes, and are not necessarily associated with the skinning method per se.
在去皮过程中防止微生物污染具有挑战性，去皮方法对于牛肉胴体的卫生状况至关重要。通常采用两种去皮方法：向上拉皮（UHP）和向下拉皮（DHP）。本研究比较了在一家牛肉加工厂中，将去皮方法从 UHP 改为 DHP 时，两种系统对胴体的微生物污染情况。在 36 个用两种技术去皮的胴体上，从八个胴体部位（火腿、肩肉、臀肉、肩部、肋腹肉、胸肉、小腿和脖子）采集了 100 cm²的面积。对每个部位的总活菌计数（TVC）和肠杆菌计数进行了测定。无论使用哪种方法，总（混合样本）胴体污染均无显著差异。然而，在肋腹肉、小腿、胸肉和脖子处观察到 TVC 存在显著差异（p<0.05）。这些差异可能归因于 HACCP 前提方案实施中存在的缺陷，而不一定与去皮方法本身有关。
