摘要
太赫兹辐射以其独特的技术优势,如瞬时性、宽带性、相干性、低能量性、穿透性和吸收性,受到了全世界各国政府、高等院校、科研机构等的高度重视并日趋成为生物医学、材料科学和物理学等领域的新兴研究热点。农作物成分如水分、蛋白、脂肪、淀粉等理论上在太赫兹谱区有较为丰富的吸收;太赫兹波的低辐射特性对农业生物样本检测更为安全;太赫兹波的穿透特性对带包装样本、包衣样本的检测又独具优势;太赫兹时域光谱与成像技术结合还可以进一步对农作物样本的组织形态进行辨别评价,因此太赫兹波技术逐渐成为农作物品质检测领域一项极具应用潜力和应用前景的前沿分析技术。简述了太赫兹时域光谱及成像技术的基本原理,聚焦于太赫兹时域光谱及成像技术在农作物品质检测领域的应用研究现状,对该技术在农作物种子质量鉴别(如品种、转基因和活力)、农作物成分分析(如糖类、水分和淀粉),农作物贮藏品质判别(如新陈度、劣变和虫蚀)以及在农产品安全检测(如农药残留、非法添加物和异物)方面的新近研究工作和进展进行归纳总结,并展望了该技术在农作物品质检测领域的应用前景和发展趋势。
With its unique technical advantages,such as transient,broadband,coherence,low energy,penetration and absorption,terahertz(THz)radiation has been highly regarded by governments,universities and research institutions worldwide and is becoming an emerging research hotspot in the fields of biomedicine,materials science and physics.Crop components such as water,protein,fat and starch are theoretically more abundantly absorbed in the THz spectra region;The low radiation properties of THz are safer for the detection of agricultural biological samples.The penetration characteristics of THz spectroscopy are unique for the detection of packaged and coated samples.Terahertz time-domain spectroscopy(THz-TDS)combined with imaging technology is used further to evaluate the histomorphology of crop samples for discrimination.Therefore,THz technology is becoming a promising cutting-edge analytical technology in crop quality inspection.In this review,the basic principles of THz-TDS and imaging technology are briefly described.The current research status of THz-TDS and imaging technology in the field of crop quality inspection is focused on the recent research progress and problems of the technology in the field of crop seed quality identification(e.g.variety,transgenic and vigor),crop composition analysis(e.g.,sugars,moisture and starch),crop storage quality discrimination(e.g.,freshness,deterioration and insect damage)and agricultural product safety detection(e.g.,pesticide residues,illegal additives and foreign substances)are summarized,and the application prospects and development trends of THz technology in the field of crop quality inspection have prospected.
作者
吴静珠
李晓琪
孙丽娟
刘翠玲
孙晓荣
余乐
WU Jing-zhu;LI Xiao-qi;SUN Li-juan;LIU Cui-ling;SUN Xiao-rong;YU Le(Beijing Key Laboratory of Big Data Technology for Food Safety,Beijing Technology and Business University,Beijing 100048,China;Institute of Crop Science,Chinese Academy of Agricultural Sciences,Beijing 100081,China)
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2022年第2期358-367,共10页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金项目(61807001,61473009)
2021年北京工商大学研究生科研能力提升计划项目资助。
关键词
太赫兹时域光谱及成像技术
农作物种子质量
农作物成分
农作物贮藏
农产品安全
Terahertz time-domain spectroscopy and imaging technology
Crop seed quality
Crop composition
Crop storage
Agricultural product safety
