Identifying Radix Curcumae by using terahertz spectroscopy |
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| Authors: | Hong Li ShaoQing Du Le Xie Lin Chen Yan Peng YiMing Zhu Tao Wu Han Li Ping Dong JiaTai Wang |
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| Institution: | 1. Engineering Research Center of Optical Instrument and System, Ministry of Education and Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China;2. Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China;3. Shanghai YangPu Geriatric Hospital, Shanghai 200093, China |
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| Abstract: | The absorption spectra from 0.2 THz to 1.6 THz of four kinds of similar Chinese herbs, including huangyujin, lvyujin, guiyujin and wenyujin, have been investigated by terahertz time-domain spectroscopy (THz-TDS). Furthermore, by using support vector machines (SVM) method, the linear kernel function, the polynomial kernel function, and the radial basis kernal function are employed for separating four kinds of Radix Curcumae. The calculated results show that the accuracy of discrimination for these four kinds of Chinese herbs is 100%. |
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