University of Novi Sad, Faculty of Agriculture, Department of Veterinary Medicine, Trg D. Obradovica 8, 21000 Novi Sad, Serbia.
Meat Sci. 2011 Jul;88(3):498-502. doi: 10.1016/j.meatsci.2011.01.034. Epub 2011 Feb 25.
The hide-to-beef microbial transfer-reducing effects of a novel Shellac treatment of hides (based on "on-hair immobilization" of microorganisms) were evaluated. In the hide-to-meat direct contact laboratory-based experiments, treatment of hides (of varying visual cleanliness) with Shellac produced significant microbial reductions on beef: up to 3.6 log(10) CFU/cm(2) of total viable count of bacteria (TVC), up to 2.5 log(10) CFU/cm(2) of Enterobacteriaceae (EC) and up to 1.7 log(10) CFU/cm(2) of generic Escherichia coli (GEC). In a small commercial abattoir under "bad-case" conditions (slaughtering dirty cattle, inadequate process hygiene), treatment of hides with Shellac produced significant microbial reductions on beef carcasses: 1.7 log(10) CFU/cm(2), 1.4 log(10) CFU/cm(2) and 1.3 log(10) CFU/cm(2) of TVC, EC and GEC, respectively. In both laboratory- and abattoir-based trials, TVC reductions on beef achieved by the Shellac hide treatment were superior to those achieved by the comparative sanitizer rinse-vacuum hide treatment, but reductions of EC and GEC did not differ significantly between the two hide treatments.
研究了一种新型紫胶（基于微生物的“毛上固定化”）处理牛皮对牛肉中微生物转移还原的效果。在基于牛皮与牛肉直接接触的实验室试验中，用紫胶处理牛皮（视觉清洁度不同）可显著降低牛肉中的微生物数量：细菌总活菌数（TVC）减少 3.6 个对数，肠杆菌科（EC）减少 2.5 个对数，普通大肠杆菌（GEC）减少 1.7 个对数。在“恶劣情况”（屠宰脏牛，加工卫生不足）下的小型商业屠宰场中，用紫胶处理牛皮可显著降低牛肉胴体中的微生物数量：TVC、EC 和 GEC 分别减少 1.7 个对数、1.4 个对数和 1.3 个对数。在实验室和屠宰场试验中，紫胶牛皮处理对牛肉中 TVC 的减少优于比较用消毒剂冲洗-真空牛皮处理，但两种牛皮处理对 EC 和 GEC 的减少没有显著差异。
