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基于核酸适配体-金纳米粒子比色传感器快速检测食品中赭曲霉毒素A 被引量:3

Rapid Detection of Ochratoxin A in Food Based on Aptamer-Gold Nanoparticles Colorimetric Sensor
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摘要 本研究以核酸适配体为识别元件实现对赭曲霉毒素A(OTA)的高选择性识别,以及采用金纳米粒子做为比色探针,建立了适用于OTA快速检测的比色适配体传感器。研究结果表明,该比色传感器对OTA具有较高的灵敏度和特异性,操作简单快速,能用于实际食品样品中OTA的快速筛查检测;该比色传感器在520nm和650nm下吸光度的比值(A520/A650)与OTA浓度在0.05~5μM的范围内呈线性相关,检测限为0.02μM。
出处 《食品安全导刊》 2018年第7期72-75,共4页 China Food Safety Magazine
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