摘要

在这项研究中，共调查了100种发酵食品，包括在突尼斯西北部收获的乳制品（Lben，Rayeb，Rigouta和Jben）橄榄和蔬菜制品，以检测肠球菌的存在。我们的结果显示高水平的肠球菌属污染，根据标准细菌学，生化和表型标准确定。回收了143株分离物;屎肠球菌占46.15％，其次为粪肠球菌27.27％，卡氏梭菌12.58％，杜兰氏肠杆菌8.39％，胡颓子5.59％。没有一种分离物显示获得性耐药性，用于人类医学中用于肠球菌感染治疗的临床相关药物，并且没有显示出溶血活性。此外，每种物种中超过50％的分离物表现出抗菌细菌素生产。需要进一步的数据来加深对发酵食品中肠球菌细菌素生产的了解，以及质量和安全的潜在风险，包括可能向人类消费者传播耐抗生素的生物体。

In this study, a total of 100 fermented food products including dairy (Lben, Rayeb, Rigouta, and Jben) olive and vegetable products, harvested in Northwestern Tunisia, were investigated for the presence of Enterococcus spp. Our results showed high levels of contamination with Enterococcus spp., identified according to standard bacteriological, biochemical and phenotypic criteria. 143 isolates were recovered; E. faecium (46.15%) was the predominant species, followed by E. faecalis (27.27%), E. casseliflavus (12.58%), E.durans (8.39%) and E. mundtii (5.59%). None of the isolates showed acquired resistance againts clinically relevant drugs used for enterococcal infections treatment in human medicins, and no haemolytic activity was demonstrated. Furthermore, over 50% of the isolates within each species exhibited antilisterial bacteriocin production. Further data are needed to enhance understanding of bacteriocin production of enterococci in fermented food products as well as the potential risks to quality and safety, including possible transmission of antibiotic resistant organisms to human consumers.

https://www.sciencedirect.com/science/article/pii/S0956713515303054