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Abstract
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Article Information:
Infection Trace of Pine Wilt Disease Based on Terahertz Spectroscopic Technology
Ling Jiang, Chun Li, Lin Huang, Zhenwei Zhang, Cunlin Zhang and Yunfei Liu
Corresponding Author: Yunfei Liu
Submitted: November 16, 2013
Accepted: November 25, 2013
Published: May 10, 2014 |
Abstract:
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In this study, we present the terahertz spectroscopic features of pine needle infected by pine wilt disease during different infection stages by applying terahertz spectroscopic techniques. We measure the absorption variation of the pine needle samples with infection time by Terahertz Time Domain Spectroscopy (THz-TDS). The absorption intensity in the frequency region of 0-2.5 THz increases gradually with infection time. While the pine wood is infected above four months, the absorption intensity reaches to maximum. However, the calculated relative refractive index compared with the reference signal of PET powder reduces with infection time. The higher frequency measurement by Fourier Transform Infrared spectroscopy (FTIR) doesn’t show the absorption variation of the samples due to huge signal attenuation in the transmission path of the samples. This study demonstrates that the relation of absorption intensity and refractive index of the pine needle sample with the infection time. We can trace the infection extent of the pine wood by measuring its terahertz spectroscopic property
Key words: Absorption, infection time, pine wilt disease, refractive index, terahertz spectroscopy, ,
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Cite this Reference:
Ling Jiang, Chun Li, Lin Huang, Zhenwei Zhang, Cunlin Zhang and Yunfei Liu, . Infection Trace of Pine Wilt Disease Based on Terahertz Spectroscopic Technology. Advance Journal of Food Science and Technology, (5): 578-582.
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ISSN (Online): 2042-4876
ISSN (Print): 2042-4868 |
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