太赫兹光谱技术在食品污染检测中的研究进展

Research Progress of Terahertz Spectroscopy Technology in Food Contamination Detection

随着新的食品加工技术及新型食品材料的不断涌现,食品污染问题也越来越多,国际食品安全事件频繁爆发,食品污染造成的食源性疾病对人民生命健康造成严重威胁,如何把控好食品质量成为人们关注的焦点问题。太赫兹技术作为一项新兴的检测技术,其反映样品的物理结构、性质及化学成分的同时,也获取样品在太赫兹波段的时域和频域信息作为物质“指纹”谱,用于无损检测和识别领域并取得了一定的成果。相较于传统的检测手段,太赫兹技术安全性高、透视性好以及波谱分辨能力强等优势使其在食品污染检测领域具有极大的应用潜力和应用前景。文章简述了太赫兹光谱技术的基本原理,以其中最为常用的太赫兹时域光谱技术为主要研究重点,对该技术在食品生物性污染、化学性污染、物理性污染检测方面的应用研究工作进行了重点归纳总结,最后聚焦于太赫兹技术在食品污染检测领域的实际应用现状,讨论其发展趋势和应用前景,并分析目前研究仍存在的问题,以期为太赫兹技术在食品安全检测领域未来的进一步发展提供参考。

With the emergence of new food processing technology and materials,food contamination problems are also more frequent outbreaks of international food safety incidents.Foodborne diseases caused by food contamination seriously threaten people's lives and health,and how to control food quality has become the focus of people's attention.Terahertz technology isan emerging detection technologythatreflects the physical structure,properties,and chemical composition of the sample at the same time,access to the sample in the terahertz band of time and frequency domain information as a material“fingerprint”spectrum,used in the field of nondestructive testing and identification and has achieved certain results.Compared with the traditional means of detection,the advantages of terahertz technology,such as high safety,good visualization,and strong spectral resolution,give it great potential and application prospects in food contamination detection.This paper briefly describes the basic principles of terahertz spectroscopy,takes the most commonly used terahertz time-domain spectroscopy as the main research focus,summarizes the application of this technology in the detection of biological food contamination,chemical food contamination,and physical food contamination,and finally focuses on the current status of the practical application of terahertz technology in the field of food contamination detection,discusses the development trend and application prospects,and analyzes the current research still exists in the field of food contamination detection.Finally,it focuses on the practical application of terahertz technology in the field of food contamination detection,discusses its development trend and application prospects,and analyzes the problems that still exist in the current research to providereferences for the further development of terahertz technology in the field of food safety detection.