Advances in the Application of Terahertz Time-Domain Spectroscopy and Imaging Technology in Crop Quality Detection
WU Jing-zhu1, LI Xiao-qi1, SUN Li-juan2, LIU Cui-ling1, SUN Xiao-rong1, YU Le1
1. Beijing Key Laboratory of Big Data Technology for Food Safety, Beijing Technology and Business University, Beijing 100048, China
2. Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
Abstract：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.
吴静珠，李晓琪，孙丽娟，刘翠玲，孙晓荣，余 乐. 太赫兹时域光谱及成像技术在农作物品质检测中的应用研究进展[J]. 光谱学与光谱分析, 2022, 42(02): 358-367.
WU Jing-zhu, LI Xiao-qi, SUN Li-juan, LIU Cui-ling, SUN Xiao-rong, YU Le. Advances in the Application of Terahertz Time-Domain Spectroscopy and Imaging Technology in Crop Quality Detection. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 42(02): 358-367.
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