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葡萄牙阿连特茹地区腌制生乳奶酪中的凝固酶阳性葡萄球菌

, and Coagulase Positive Staphylococci in Cured Raw Milk Cheese from Alentejo Region, Portugal.

作者信息

Praça Joana, Furtado Rosália, Coelho Anabela, Correia Cristina Belo, Borges Vítor, Gomes João Paulo, Pista Angela, Batista Rita

机构信息

Food Microbiology Laboratory, Food and Nutrition Department, National Institute of Health Doutor Ricardo Jorge, Avenida Padre Cruz, 1649-016 Lisbon, Portugal.

Faculty of Farmacy, University of Lisbon, Avenida Prof. Gama Pinto, 1649-003 Lisbon, Portugal.

出版信息

Microorganisms. 2023 Jan 27;11(2):322. doi: 10.3390/microorganisms11020322.

Abstract

Traditional cheeses are part of the Portuguese gastronomic identity, and raw milk of autochthonous species is a common primary ingredient. Here, we investigated the presence of , Coagulase Positive Staphylococci (CPS) and pathogenic , as well as of indicator microorganisms ( and other spp.) in 96 cured raw milk cheeses from the Alentejo region. Whole genome sequencing (WGS) of pathogenic and spp. as well as antimicrobial resistance (AMR) screening of isolates was also performed. , CPS > 10 cfu/g and Extraintestinal were detected in 15.6%, 16.9% and 10.1% of the samples, respectively. Moreover, > 10 cfu/g and Staphylococcal enterotoxins were detected in 4.2% and 2.2% of the samples, respectively. AMR was observed in 27.3% of the isolates, six of which were multidrug resistant. WGS analysis unveiled clusters of high closely related isolates for both and (often correlating with the cheese producer). This study can indicate poor hygiene practices during milk collection/preservation or during cheese-making procedures and handling, and highlights the need of more effective prevention and control measures and of multi-sectoral WGS data integration, in order to prevent and detect foodborne bacterial outbreaks.

摘要

传统奶酪是葡萄牙美食特色的一部分,本地品种的生乳是常见的主要原料。在此,我们调查了来自阿连特茹地区的96种腌制生乳奶酪中凝固酶阳性葡萄球菌(CPS)、致病性大肠杆菌以及指示微生物(大肠杆菌和其他肠杆菌属菌种)的存在情况。还对致病性大肠杆菌和肠杆菌属菌种进行了全基因组测序(WGS),并对分离株进行了抗菌药物耐药性(AMR)筛查。分别在15.6%、16.9%和10.1%的样品中检测到大肠杆菌、CPS>10 cfu/g和肠外大肠杆菌。此外,分别在4.2%和2.2%的样品中检测到大肠杆菌>10 cfu/g和葡萄球菌肠毒素。在27.3%的分离株中观察到AMR,其中6株为多重耐药。WGS分析揭示了大肠杆菌和肠杆菌属的高度密切相关分离株簇(通常与奶酪生产商相关)。这项研究表明在牛奶收集/保存过程或奶酪制作及处理过程中卫生习惯不佳,并强调需要更有效的预防和控制措施以及多部门WGS数据整合,以预防和检测食源性细菌暴发。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7c48/9964920/7d4641970dce/microorganisms-11-00322-g001.jpg

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