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首页> 外文期刊>International Journal of Environmental Research and Public Health >Current Status of Antibiograms of Listeria ivanovii and Enterobacter cloacae Isolated from Ready-To-Eat Foods in Alice, South Africa
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Current Status of Antibiograms of Listeria ivanovii and Enterobacter cloacae Isolated from Ready-To-Eat Foods in Alice, South Africa

机译：南非爱丽丝即食食品中分离的伊斯特氏菌和阴沟肠杆菌抗菌谱的现状

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This study assessed the antimicrobial susceptibility of 51 Listeria ivanovii and 33 Enterobacter cloacae strains isolated from various ready-to-eat foods sold in Alice, South Africa. Isolates were identified using standard microbiological tests and further confirmed using API 20E and API Listeria kits. The disc diffusion technique was used to screen for antimicrobial susceptibility against 15 antimicrobials; minimum inhibitory concentration of five antibiotics was determined by the broth dilution method. All the strains of E. cloacae (100%) and 96% of L. ivanovii isolates were resistant to at least four or more of the antibiotics; nineteen antibiotypes were obtained based on the antibiotics used in the study. Antibiotype A5: AR PGR VAR ER APR was predominant in both L. ivanovii (23.5%) and E. cloacae (57.5%) isolates. Marked susceptibility of Listeria ivanovii was observed against chloramphenicol, ciprofloxacin, streptomycin and trimethoprim/sulfamethoxazole (100%) each while E. cloacae registered 100% susceptibility to ciprofloxacin only. Various percentages of susceptibility was reported to chloramphenicol and gentamicin (91%) each, nalidixic acid (97%) and streptomycin (94%). The MIC90 ranged from 0.004–7.5 μg/mL with E. cloacae being the most susceptible organism. The study demonstrated the presence of multi-resistant strains of bacteria in ready-to-eat-foods and speculates that these foods could serve as important vehicles transmitting multi-resistant bacteria to humans.
机译：这项研究评估了从南非爱丽丝出售的各种即食食品中分离出的51种伊万氏李斯特菌和33种阴沟肠杆菌的抗菌药敏性。使用标准微生物测试鉴定出分离物，并使用API​​ 20E和API Listeria试剂盒进一步确认。圆盘扩散技术用于筛选对15种抗菌药物的敏感性。通过肉汤稀释法确定五种抗生素的最小抑菌浓度。阴沟肠杆菌的所有菌株（100％）和伊凡诺氏乳杆菌的96％都对至少四种或更多种抗生素有抗药性。根据研究中使用的抗生素获得了19种抗生物型。抗生物型A5：AR PGR VAR ER APR在伊凡诺氏乳杆菌（23.5％）和阴沟肠杆菌（57.5％）分离株中均占主导地位。观察到伊万氏李斯特菌对氯霉素，环丙沙星，链霉素和甲氧苄氨嘧啶/磺胺甲基异恶唑（100％）的敏感性均较高，而阴沟肠杆菌仅对环丙沙星的敏感性为100％。据报道，氯霉素和庆大霉素（91％），萘啶酸（97％）和链霉素（94％）各自的敏感性百分比不同。 MIC90的范围为0.004–7.5μg/ mL，其中阴沟肠杆菌是最易感染的生物。该研究表明，即食食品中存在多抗细菌菌株，并推测这些食品可以作为将多抗细菌传播给人类的重要载体。

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