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6TMR Modern Herbal Medicine  2019, Vol. 2 Issue (3): 158-166    DOI: 10.12032/TMRmhm2017A53
Orginal Article     
Erahertz spectral analysis of Xiling Zhimu with different geological conditions and plant age
Li-Na Zhang1, Yu-Hui Ma1, Ze-Jia Zhang1, Kai-Xuan Hou2, Miao-Miao Lin1, Guo-Wei Zhang1,*(), Cun-Guang Lou2,*()
1College of Chinese Medicine, Hebei University, Baoding, Hebei, China.
2School of Electronics and Information Engineering, Hebei University, Baoding, Hebei, China.
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Abstract

Objective: In order to identify the quality of different geological conditions and plant ages of Xiling Zhimu. Methods: This article uses the terahertz spectroscopy to detect and analyze different geological conditions and ages of Zhimu (Anemarrhenae Rhizoma) from the same origin. Results: The terahertz time-domain spectroscopy of different geological conditions and ages has a decrease relative to the reference amplitude and has a delay. The refractive index has obvious differences, and the refractive index can be used as a way to identify the tablets. The absorption coefficients of different ages Zhimu samples has significant differences in the range of 1.0-2.0 THz. The absorption coefficients of different geological conditions Zhimu samples has significant differences in the range of 1.1-2.0 THz. Conclusions: The differences caused by different production methods should be considered in the identification of genuine regional drug. When the Zhimu is grown due to different geological conditions and plant ages, its efficacy will also change. we can detect this change by terahertz spectroscopy.

Highlights

The terahertzian time-domain spectrum of Zhimu (Anemarrhenae Rhizoma) at different plant ages and different geological environments decreased relative to the reference amplitude and showed a delay. The refractive index has obvious difference, which can be used as a way to identify the film. The absorption coefficients of Zhimu at different plant ages were significantly different in the range of 1.0-2.0THz, and the absorption coefficients of Zhimu in different geological environments were different in the range of 1.1-2.0THz. Therefore, the differences caused by different preparation methods should be considered in the identification of authentic medicinal materials. When Zhimu grows at different plant ages and in different geological environments, its pharmacodynamics will change, and we can detect this change by terahertz spectroscopy, which can provide a basis for the identification of Xiling Zhimu.



Key wordsterahertz spectrum      Xiling Zhimu      index of refraction      absorption coefficients     
Published: 29 July 2019
Fund:  This work was Financial supported by Baoding philosophy social planning project (2018121).
Corresponding Authors: Zhang Guo-Wei,Lou Cun-Guang     E-mail: xxzgw@126.com;loucunguang@163.com
About author: # Both authors contributed equally to this work.
Cite this article:

Li-Na Zhang, Yu-Hui Ma, Ze-Jia Zhang, Kai-Xuan Hou, Miao-Miao Lin, Guo-Wei Zhang, Cun-Guang Lou. Erahertz spectral analysis of Xiling Zhimu with different geological conditions and plant age. 6TMR Modern Herbal Medicine, 2019, 2(3): 158-166. doi: 10.12032/TMRmhm2017A53

URL:

https://www.tmrjournals.com/mhm/EN/10.12032/TMRmhm2017A53     OR     https://www.tmrjournals.com/mhm/EN/Y2019/V2/I3/158

Figure.1 Five samples of Zhimu
Type Thickness / mm
Three-year 1.82
five-year 1.79
six-year 1.96
Gneiss 1.93
Limestone 2.10
Table 1 Plant type and thickness of Zhimu
Figure.2 The terahertz time-domain spectroscopy of different plant ages samples
Figure.3 The terahertz time-domain spectroscopy of different geological samples
Figure.4 The index of refraction of different plant ages samples
Figure.5 The index of refraction of different geological samples
Figure.6 The absorption coefficient of different plant ages samples
Figure.7 The absorption coefficient of different geological samples
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