表面增强拉曼光谱技术在食品检测中的应用研究进展

食品污染是危害公众健康和安全的重要问题,探究灵敏、快速、简单的技术,以便在痕量水平上检测污染物,对保障食品质量安全和风险评价具有十分重要的意义.表面增强拉曼光谱(SERS)是利用光与金、银等纳米结构材料相互作用产生很强的表面等离子激元共振效应,可显著增强吸附在纳米结构表面上分子的拉曼信号,以超灵敏获取样品自身或拉曼探针...

Application advances of surface-enhanced Raman spectroscopy in food detection

Food contamination is an important issue that endangers public health and safety.Exploring sensitive,rapid and simple technologies to detect contaminants at trace level is of great significance for ensuring food quality safety and risk assessment.Surface-enhanced Raman spectroscopy(SERS)utilizes plasmonic nanomaterials to generate a strong surface plasmon resonance(SPR)effect in the visible to near-infrared region,such as silver and gold nanostructures.The SPR effect can significantly enhance the Raman signals of adsorbed molecules on the surface of nanostructures,allowing to gain the sensitive fingerprint information for the analyte itself or the Raman reporter.This technology has the advantages of high sensitivity,fast response,small water interference and non-invasive,etc.,and has been widely used in the field of food detection.This article reviews the application and research progress of SERS technology in the detection of agricultural and veterinary drug residues,toxins and food-borne pathogens in the recent five years,and prospects its future development trend.