Detection and Antibiotic Susceptibility Profile of Bacterial Pathogens Isolated from Food Cutting Boards in Rio De Janeiro, Brazil.

IF 1.9 2区 农林科学 Q3 FOOD SCIENCE & TECHNOLOGY
Bianca de Souza Costa, Katarine Coutinho Silva, Carolaine Totelote Medeiros Pimenta Rodrigues, Ana Carolina Carvalho De Oliveira, Silvia Maria Dos Reis Lopes, Ivano de Filippis
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Abstract

We investigated bacterial pathogens on restaurant cutting boards using phenotypic and molecular methods, and determined their antibiotic susceptibility. A total of 32 samples were collected from polyethylene cutting boards in the kitchens of 16 restaurants in Rio de Janeiro, Brazil. A total of 29 bacterial strains were isolated and identified, including Salmonella spp. (n = 11), Escherichia coli (n = 10), Staphylococcus aureus (n = 6), and Listeria spp. (n = 2). Of the 32 cutting boards, 9 (28.1%) harbored at least one bacterial species, 7 (21.9%) had two species, and 2 (6.2%) carried three species. Notably, the detection of two pathogens directly from raw samples using quantitative polymerase chain reaction with high-resolution melting (qPCR-HRM) was significant: Listeria monocytogenes was identified in two samples by phenotypic methods but in 18 samples by qPCR-HRM, while E. coli was found in 10 samples by phenotypic methods and in 29 samples by qPCR-HRM. Antibiotic resistance was another concern, especially for L. monocytogenes strains, which exhibited high resistance to all tested antibiotics. Additionally, multidrug-resistant strains were identified, including a S. aureus strain with strong potential to be methicillin-resistant. Our findings underscore the importance of molecular methods for detecting specific pathogens on food-processing surfaces, highlighting the need for improved monitoring and control measures in restaurant kitchens.

巴西巴西巴西地区食品砧板病原菌检测及药敏分析
我们采用表型和分子方法对餐馆砧板上的病原菌进行了调查,并测定了它们的抗生素敏感性。从巴西里约热内卢16家餐馆厨房的聚乙烯砧板上共收集了32个样本。共分离鉴定29株细菌,其中沙门氏菌(11株)、大肠杆菌(10株)、金黄色葡萄球菌(6株)、李斯特菌(2株)。32份砧板中,9份(28.1%)携带至少1种细菌,7份(21.9%)携带2种细菌,2份(6.2%)携带3种细菌。值得注意的是,使用高分辨率熔融定量聚合酶链反应(qPCR-HRM)直接从原始样品中检测到两种病原体具有显著意义:两种样品通过表型方法鉴定出单核细胞增生李斯特菌,18种样品通过qPCR-HRM;大肠杆菌通过表型方法鉴定出10种样品,29种样品通过qPCR-HRM。抗生素耐药性是另一个值得关注的问题,特别是单核增生乳杆菌菌株,它对所有测试的抗生素都表现出高耐药性。此外,还发现了多药耐药菌株,包括一株可能对甲氧西林耐药的金黄色葡萄球菌。我们的研究结果强调了分子方法在食品加工表面检测特定病原体的重要性,强调了改善餐厅厨房监测和控制措施的必要性。
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来源期刊
Foodborne pathogens and disease
Foodborne pathogens and disease 医学-食品科技
CiteScore
5.30
自引率
3.60%
发文量
80
审稿时长
1 months
期刊介绍: Foodborne Pathogens and Disease is one of the most inclusive scientific publications on the many disciplines that contribute to food safety. Spanning an array of issues from "farm-to-fork," the Journal bridges the gap between science and policy to reduce the burden of foodborne illness worldwide. Foodborne Pathogens and Disease coverage includes: Agroterrorism Safety of organically grown and genetically modified foods Emerging pathogens Emergence of drug resistance Methods and technology for rapid and accurate detection Strategies to destroy or control foodborne pathogens Novel strategies for the prevention and control of plant and animal diseases that impact food safety Biosecurity issues and the implications of new regulatory guidelines Impact of changing lifestyles and consumer demands on food safety.
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