Department of Veterinary Public Health, College of Veterinary Medicine, University of Mosul, Mosul, Iraq.
Open Vet J. 2024 Jul;14(7):1658-1667. doi: 10.5455/OVJ.2024.v14.i7.15. Epub 2024 Jul 31.
Meat contamination occurs in various ways, the most important of which are live animals before slaughter and the slaughter process (de-hiding and evisceration). For this, many substances were used that have an antimicrobial effect and can disinfect the surfaces of the carcass and extend its shelf life.
This research aimed to study the efficiency of using some organic acids (lactic acid and beefxide) to reduce the microbial load (indicator microorganisms) on the surfaces of beef carcasses and some edible organs in the Mosul slaughterhouse.
Two hundred sixty-four swabs (192 carcasses + 72 edible organ samples) were collected over the course of three months from the Mosul slaughterhouse in Nineveh Governorate between September 2023, and December 2023 (132 treated with organic acids and 132 not treated). The petrifilm method was used to detect indicator microorganisms in the samples.
Our results showed that the contamination rate in beef carcasses with generic , coliforms, total coliform counts, and before treatment was 0.81, 1.22, 1.48, and 1.38 mean log colony forming unit (CFU/cm), respectively. While the contamination rate in samples treated with organic acids for generic , coliforms, total coliform counts, and was -0.1, 0.31, 0.45, and 0.41 mean log CFU/cm, respectively. Moreover, the level of contamination with indicator microorganisms in edible organs treated with organic acids was lower compared to untreated samples. Even though there was contamination with indicator microorganisms in the liver, heart, and kidney, there was no "significant" difference between them. Whereas there was no significant difference ( > 0.05) between lactic acid and beefxide solution in terms of reducing the rate of contamination of the indicator microorganisms in carcasses and the edible organs samples. Regarding the type of swabs used in the study, the results showed the effectiveness of sponge swabs, as the rate of microbial recovery (indicator microorganisms) was higher ( < 0.01) compared to cotton swabs.
The study demonstrated the efficiency of using organic acids (lactic acid and beefxide solution) in reducing the microbial load to a level that does not cause diseases.
肉类污染有多种途径，其中最重要的是宰前活畜和屠宰过程（去毛和去内脏）。为此，人们使用了许多具有抗菌作用的物质，可以对胴体表面进行消毒，并延长其保质期。
本研究旨在研究使用一些有机酸（乳酸和 beefxide）来减少摩苏尔屠宰场牛肉胴体和一些可食用器官表面微生物负荷（指示微生物）的效率。
在 2023 年 9 月至 12 月期间，从尼尼微省摩苏尔屠宰场采集了 264 个拭子（192 个胴体+72 个可食用器官样本），在三个月的时间里，其中 132 个样本用有机酸处理，132 个样本未处理。使用 petrifilm 法检测样品中的指示微生物。
我们的结果表明，未经处理时，牛肉胴体中 generic、coliforms、总大肠菌群计数和的污染率分别为 0.81、1.22、1.48 和 1.38 平均对数菌落形成单位（CFU/cm）。而用有机酸处理的样品中 generic、coliforms、总大肠菌群计数和的污染率分别为-0.1、0.31、0.45 和 0.41 平均对数 CFU/cm。此外，用有机酸处理的可食用器官中指示微生物的污染水平低于未处理的样品。尽管肝脏、心脏和肾脏中存在指示微生物的污染，但它们之间没有“显著”差异。而在降低胴体和可食用器官样本中指示微生物污染率方面，乳酸和 beefxide 溶液之间没有显著差异（>0.05）。至于研究中使用的拭子类型，结果表明海绵拭子的效果更好，因为微生物回收率（指示微生物）更高（<0.01）。
该研究表明，使用有机酸（乳酸和 beefxide 溶液）可以有效降低微生物负荷，使其达到不会引起疾病的水平。
