基于纳米酶的多功能色度测定,光双模式测定用于在牛奶中检测沙门氏菌typhimurium
Jiao Hu1, Chao-Hui Chen2, Lihua Wang3
1Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, School of Environment and Health, Jianghan University, Wuhan, 430056, China. hujiao@whu.edu.cn.
Mikrochimica acta
|July 15, 2024
概括
使用红色光纳米圈和纳米颗粒的新双信号测定方法可以快速和灵敏地检测牛奶中的沙门氏菌. 这种方法在2小时内提供了方便的初步查和食物传播病原体的准确量化.
科学领域:
- 纳米技术纳米技术
- 生物感应是一种生物感应.
- 食品安全 食品安全
背景情况:
- 准确和快速检测牛奶中的沙门氏菌对于预防食物传播疾病至关重要.
- 复杂的牛奶基质可以干扰敏感的沙门氏菌检测方法.
研究的目的:
- 开发一种双信号报告系统,用于在牛奶中检测敏感的沙门氏菌.
- 为了克服牛奶中的矩阵效应,以改善沙门氏菌分析.
主要方法:
- 设计了一个双信号通报器:红色光纳米圈 (RNs) -纳米粒子 (Pt) 结合.
- 配备有免疫捕获抗体的RNs-Pt (免疫RNs-Pt).
- 使用H2O2/TMB系统和免疫磁珠用于捕获,标记和分离沙门氏菌 (S. typhi).
主要成果:
- 在2个小时内检测到低至50 CFU的S. typhi.
- 经过证明的双信号检测模式:光 (615 nm) 和色度 (450 nm).
- 对于光和吸收信号在特定范围内进行定量检测,建立了线性相关性.
结论:
- 开发的试验可用于实际应用,用于检测牛奶中的沙门氏菌.
- 双模式读数测定允许同时进行初步查和准确量化食品传播病原体.
- 这种方法有望通过有效检测污染来确保食品安全.
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