实时复合酶聚合酶放大 (实时RPA) 检测食品中的金黄色葡萄球菌
Qinglong Wang1, Liping Song1, Long Li2
1Beijing Food Inspection and Research Institute, Beijing Food Safety Monitoring and Risk Assessment Center, Beijing, China; Laboratory of Key Technologies of Major Comprehensive Guarantee of Food Safety for State Market Regulation, Beijing, China.
Journal of microbiological methods
|February 14, 2026
概括
一种新的实时复合酶聚合酶放大 (RPA) 测定方法可以在同一天快速检测食品中的金黄色葡萄球菌. 这种经过验证的方法提供了可靠的结果,与传统的培养技术相提并论.
科学领域:
- 食品微生物学 食品微生物学
- 分子诊断学 分子诊断学
- 细菌学 细菌学是一门学科.
背景情况:
- 黄金葡萄球菌 (S. aureus) 是一种重要的食物传播病原体.
- 准确和快速的检测方法对于食品安全监测至关重要.
- 现有的以文化为基础的方法可能会耗时.
研究的目的:
- 开发和验证用于S. aureus检测的快速实时复合酶聚合酶放大 (RPA) 试验.
- 为了评估测试在各种食品矩阵中的性能.
- 为了比较测试的有效性与已建立的参考方法.
主要方法:
- 开发一种针对S. aureus的实时RPA测定方法.
- 根据GB4789.45标准进行验证.
- 使用人工和自然污染的食品样本进行测试 (乳制品,肉类,谷物,大豆,饮料).
- 与GB 4789.10培养方法进行比较.
主要成果:
- 实时RPA测定在39°C的20分钟内实现了特定放大.
- 检测极限 (LOD50) 是 298 CFU/mL.
- 在6小时的丰富后,在五种食物矩阵中,相对检测极限 (RLOD) 低于2.5.
- 实时RPA和参考培养方法之间没有发现显著差异 (p > 0.05).
结论:
- 开发的实时RPA测定提供了快速的,当天检测S. aureus富化后.
- 该测试显示了与传统培养方法相比的诊断准确性.
- 这种实时RPA测定是S. aureus.常规食品安全监测的可靠替代方案.
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