菌体尾尖蛋白涂层金纳米颗粒与智能手机相结合,用于快速检测细菌和光热灭菌
Bin Hong1, Ting Qin1, Wenhai Wang1
1School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, China.
Talanta
|May 19, 2024
概括
这项研究提出了一种用于检测和治疗Salmonella typhimurium的新型生物传感器. "感知和治疗"生物传感器使用金纳米粒子和菌体尾尖蛋白来快速,选择性地识别和根除病原体.
科学领域:
- 食品安全 食品安全
- 生物传感器技术的技术
- 纳米技术纳米技术
背景情况:
- 食物传播的病原体,如沙门氏菌 (Salmonella typhimurium),对粮食安全和公共健康构成重大风险.
- 目前的检测方法可能耗时,缺乏综合治疗能力.
- 多功能生物传感器为同时检测和治疗提供了一个有希望的方法.
研究的目的:
- 开发一种具有针对Salmonella typhimurium综合识别和治疗功能的新型生物传感器.
- 创建一种快速,有选择性和高效的方法来检测和消除食物传播的病原体.
- 在食品工业中展示"感知和处理"方法的潜力.
主要方法:
- 合成的金纳米粒子与菌体尾尖蛋白 (AuNPs@TSP) 功能化.
- 将AuNPs@TSP集成到一个"感知和处理"生物传感器中.
- 利用色度变化和近红外 (NIR) 辐射进行检测和治疗.
- 用智能手机分析RGB值进行量化.
主要成果:
- AuNPs@TSP生物传感器在50分钟内实现了对S. typhimurium的快速色度检测.
- 通过智能手机应用程序分析,实现了2.53 × 10^3 CFU/mL的检测极限 (LOD).
- 生物传感器在NIR照射下 (808nm,6分钟) 显示出100%的抗菌效果对抗S. typhimurium.
- 在真实样本中观察到高选择性,快速反应和广泛适用性.
结论:
- 开发的"感知和治疗"生物传感器可以有效地检测和消灭沙门氏菌.
- 这项技术在提高食品安全和减少食源性疾病方面具有重大潜力.
- 该研究强调了多功能生物传感器在食品工业中对病原体控制的有用性.
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