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对食品样本中各种细菌检测技术的检测极限的审查
Xinyi Zhao1,2, Abhijnan Bhat1,3, Christine O'Connor1
1School of Food Science and Environmental Health, Technological University Dublin, Grangegorman, D07 ADY7 Dublin, Ireland.
Nanomaterials (Basel, Switzerland)
|May 24, 2024
概括
快速检测细菌对食品安全至关重要. 聚合酶连锁反应 (PCR) 在6CFU/mL提供了最低检测极限 (LOD),优于侧流免疫染色法 (LFIA) 和电化学方法.
科学领域:
- 食品科学与技术 食品科学与技术
- 分析化学 分析化学
- 微生物学 微生物学
背景情况:
- 食物传播疾病,通常是细菌性疾病,对健康构成重大风险.
- 准确和快速的检测方法对于食品安全和环境监测至关重要.
- 常见的食源性病原体包括沙门氏菌,李斯特菌,坎比洛巴克特菌,金黄色葡萄球菌和大肠杆菌.
研究的目的:
- 审查食品安全细菌检测方法的最新发展 (2013-2023年).
- 为了比较聚合酶链反应 (PCR),侧流免疫染色学试验 (LFIA) 和电化学方法的分析性能和检测极限 (LOD).
- 分析细菌物种,食物矩阵和检测技术对分析结果的影响.
主要方法:
- 在食品样本中检测细菌的PCR,LFIA和电化学方法的综合文献综述.
- 对特定细菌物种报告的分析性能和检测极限 (LOD) 的分析.
- 评估影响LOD的因素,包括细菌类型,食物矩阵和检测技术.
主要成果:
- 聚合酶链反应 (PCR) 显示了最低的平均 LOD (6 CFU/mL),其次是电化学方法 (12 CFU/mL) 和 LFIA (24 CFU/mL).
- 细菌物种和食物矩阵显著影响了分析性能和LOD;对于沙门氏菌和大肠杆菌以及鱼和蛋样本,观察到较低的LOD.
- 纳米粒子 (黄金,铁) 在LFIA中占据了重要地位,而循环电压测量 (CV),电化学阻抗光谱 (EIS) 和微分脉冲电压测量 (DPV) 是关键的电化学技术.
结论:
- 在食品安全应用中,PCR为细菌检测提供了更高的灵敏度.
- 优化检测方法考虑细菌物种和食物矩阵是提高准确性的必要条件.
- 未来的研究应该集中在先进的材料和纳米材料上,以提高细菌检测的分析性能.
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