ABSTRACT

Salmonella Heidelberg is frequently associated with diseases transmitted by food of animal origin, so that the cleaning and disinfection of pigs farms are important for the control of this pathogen. This research was aimed to test the biocidal potential of ozonated water in different concentrations for the inactivation of a Salmonella Heidelberg isolated from pigs. We analyzed the strain antibiotic sensitivity profile to 17 antimicrobials and exposed the strain to disinfectant and three different concentrations of ozonated water (0.5 mg/L, 2.4 mg/L, and 4.4 mg/L) for one, five, and 10 minutes, in presence and absence of organic matter (OM), and performed a quantitative assessment of the bacterial genomic DNA. Salmonella Heidelberg was characterized as multidrug-resistant. Ozonated water inhibited bacterial growth in the absence of OM after one minute, with changes in bacterial DNA concentration.

摘要

海德堡沙门氏菌经常与动物源性食物传播的疾病有关，因此养猪场的清洁和消毒对于控制这种病原体很重要。这项研究旨在测试不同浓度的臭氧水对从猪身上分离出的海德堡沙门氏菌灭活的杀菌潜力。我们分析了菌株对 17 种抗菌剂的抗生素敏感性曲线，并将菌株暴露在消毒剂和三种不同浓度的臭氧水（0.5 mg/L、2.4 mg/L 和 4.4 mg/L）中 1 分钟、5 分钟和 10 分钟。有机物 (OM) 的存在与否，并对细菌基因组 DNA 进行了定量评估。沙门氏菌海德堡被描述为耐多药。一分钟后，臭氧水在没有 OM 的情况下抑制细菌生长，细菌 DNA 浓度发生变化。