As an attempt to control bacterial cross-contamination of beef carcasses, in the present investigation acetic acid and lactic acid (3% v/v) were used for bacterial decontamination. For the decontamination, cows were sprayed with each above acid at two different stages; (i) on live animal's hides, (ii) on carcass surfaces immediately after slaughter. Microbiological samples were taken on different hide areas of animals before spraying and on carcass surfaces at 24 h after spraying. Meat quality traits were also analyzed on the sprayed animals. The detected microorganisms were identified using 16SrRNA gene sequencing. A diversity of bacterial species such as Staphylococcus, Shigella, Bacillus, Escherichia and Salmonella etc. were found on both external hide and carcass surface samples. The decontamination sprays significantly reduced the numbers (2–5 log unit) of all aforementioned bacterial species on carcass surfaces as compared with non-sprayed control. Thus, the two times-spray applications with the acid could be an effective tool for reducing bacterial cross-contaminations of beef carcass without adverse effect on meat quality.

为了控制牛肉car体的细菌交叉污染，在本研究中，使用乙酸和乳酸（3％v / v）进行细菌消毒。为了进行去污，在两个不同的阶段对奶牛分别喷上上述酸。（i）在活体动物的皮革上，（ii）在屠宰后立即在car体表面上。喷洒前在动物的不同皮革区域以及喷洒后24 h的cas体表面采集微生物样本。还对喷洒的动物的肉品质性状进行了分析。使用16SrRNA基因测序鉴定检测到的微生物。在外皮和car体表面样品上都发现了多种细菌，例如葡萄球菌，志贺氏菌，芽孢杆菌，大肠埃希菌和沙门氏菌等。与未喷雾的对照相比，去污喷雾剂显着减少了aforementioned体表面上所有上述细菌种类的数量（2-5 log单位）。因此，用酸两次喷涂可成为减少牛肉car体细菌交叉污染而又不对肉质造成不利影响的有效工具。