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条码式侧流免疫染色条带用于在咖啡样本中半定量检测甲氧素A

Luis Alberto Contreras Alvarez¹, Marcia Daniela Lazo Jara¹, Fabiana Vasconcelos Campos¹

¹Morphology Department, Federal University of Espirito Santo, Vitória, Brazil.

Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment

|February 28, 2024

概括

一种新的侧流检测方法可以快速,灵敏,经济地检测咖啡中的Ochratoxin A (OTA). 该方法使用条码式测试进行半定量分析,为真菌毒素监测提供可靠的结果.

科学领域:

食品安全和分析化学
毒素检测和分析

背景情况:

毒素A (OTA) 是农产品中普遍存在的真菌毒素,对健康构成重大风险.
准确和有效的OTA检测方法对于确保食品安全和质量至关重要.
现有的检测方法可能耗时,昂贵,或缺乏所需的灵敏度.

研究的目的:

开发一种快速,灵敏和具有成本效益的测试方法,用于半定量检测Ochratoxin A (OTA).
为了验证测试在现实世界样本中的性能,特别是咖啡.
为农产品中的真菌毒素监测提供一个用户友好的工具.

主要方法:

开发一个条码式的横向流量试验 (LFA).
在试验区内固定牛血清白蛋白-奥克拉托克辛A (BSA-OTA) 复合体.
使用与金纳米颗粒标记的抗OTA抗体进行竞争性结合测试.
基于对应不同OTA度的不同颜色模式的半量化.

主要成果:

开发的LFA表现出高灵敏度,检测极限为2.5μg/L.
该试验显示出高可重现性,变化系数在2%至13%之间.
咖啡样本的颜色图案与标准OTA溶液的相关性很好,表明可靠的适用性.

结论:

条码式横流量测试提供了一种可靠和高效的方法,用于在咖啡中半定量检测OTA.
这种测试为食品安全应用中的快速真菌毒素查提供了实际解决方案.
开发的方法是敏感的,可复制的,适合分析真正的农业样本.

关键词:

奥克拉托克辛A是一种咖啡咖啡咖啡咖啡咖啡金纳米颗粒的金子纳米颗粒侧向流量检测试验这是一个半定量化的半定量化.

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