侧向流量试验用于同时检测多种真菌毒素,使用纳米酶来放大信号
Yunong Tang1, Pengfei Ma2, Imran Mahmood Khan3
1State Key Laboratory of Food Science and Resources, School of Food Science and Technology, International Joint Laboratory on Food Safety, Jiangnan University, Wuxi 214122, China.
Food chemistry
|July 20, 2024
概括
这项研究介绍了一种基于三通道阿普他默的新型侧向流量试验 (Apt-LFA),用于同时检测多种真菌毒素. 这种快速而准确的方法通过识别诸如亚毒素和毒素A等共污染物,提高了安全性.
科学领域:
- 分析化学 分析化学
- 生物传感技术的技术
- 食品安全 食品安全
背景情况:
- 毒素的共同污染带来了协同作用的毒性风险,需要同时检测方法.
- 现有的多种真菌毒素检测方法可能是复杂和耗时的.
- 准确和快速检测对于减轻与真菌毒素相关的健康危害至关重要.
研究的目的:
- 开发一种简单,快速,准确的基于三通道阿普他默的侧向流量测定方法 (Apt-LFA),用于同时检测阿弗拉托xin M1 (AFM1),阿弗拉托xin B1 (AFB1) 和阿弗拉托xin A (OTA).
- 为了实现信号放大,使用金二纳米酶提高灵敏度.
- 在真实样本的复杂矩阵中验证试验的性能.
主要方法:
- 建立了基于三通道阿普他默的侧向流量试验 (Apt-LFA).
- 通过染色基质催化利用金二纳米酶进行信号放大.
- 基于光强度变化的优化补充序列.
- 对半定量结果进行了灰度分析.
主要成果:
- 实现了AFM1的0.39 ng/mL,AFB1的0.36 ng/mL和OTA的0.82 ng/mL的检测极限.
- 在复杂矩阵中证明了高恢复率:AFM1的93.33%-97.01%,AFB1的95.72%-102.67%和OTA的106.88%-109.33%.
- 该APT-LFA提供了敏感和可靠的半定量结果.
结论:
- 开发的三通道Apt-LFA提供了一个简单而有效的平台,用于同时检测多个小分子目标,如真菌毒素.
- 这种测试为食品安全应用中快速,准确和敏感的真菌毒素查提供了一种新方法.
- 使用金二纳米酶显著增强信号放大,以提高检测能力.
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