磁性纳米酶显色技术在食品安全检测中的应用

磁性纳米酶显色技术是指利用磁性纳米酶的类过氧化物酶性质，在显色底物的存在下，对目标物进行快速、灵敏、可视化检测的新型技术。与天然酶相比，磁性纳米酶易制备、易保存、易回收、成本低。本文简单介绍了磁性纳米酶的催化机理和活性调节，重点综述了磁性纳米酶显色技术在食品中农兽药和重金属残留、食源性致病菌及其它有害物质检测中的应用现状。目前，该技术仍存在酶活性较弱、检测应用范围较窄、选择性欠佳等问题。本文针对上述问题提出了相关建议，并对其未来发展方向进行了展望。

Application of Magnetic Nanoenzyme Colorimetric Technology in Food Safety Detection

Magnetic nanoenzyme color development technology is a new technology,which is used to rapid,sensitive,and visual detection of targets based on the peroxidase-like properties of magnetic nanoenzyme.Compared with natural enzymes,magnetic nanoenzyme has the advantages of easy preparation,preservation,recovery and low cost.In this paper,the catalytic mechanism and activity regulation of magnetic nanoenzyme are briefly introduced,the application of magnetic nanoenzyme chromogenic technology in the detection of pesticide and ceterinary drug residues,foodborne pathogens and other harmful substances in food are introduced emphatically.At present,the technology still has problems,such as weak enzyme activity,narrow detection range,and poor selectivity.Some suggestions are given for resolving above problems,and its future development direction is prospected.