1. College of Mathematics, Physics and Information Engineering, Zhejiang Normal University, Jinhua 321004, China 2. College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, China
Abstract:Infrared spectra of semen celosiae and semen celosiae cristatae were obtained directly, quickly and accurately by Fourier transform infrared spectroscopy (FTIR) with OMNI sampler. Continuous wavelet transform was used to extrude local region of infrared spectra of semen celosiae and its confusable varieties. The difference of infrared spectra between semen celosiae and semen celosiae cristatae was extruded greatly. Accurate identification rate was improved greatly. Morlet wavelet, which can detect singular values of signal effectively, was selected as the mother wavelet. One-dimensional continuous wavelet transform was implemented for the infrared spectra of semen celosiae and its confusable varieties. The difference between semen celosiae and semen celosiae cristatae was observed at all scales in the wavelet domain. An optimal scale, at which the difference between semen celosiae and semen celosiae cristatae was the most obvious, was selected to identify semen celosiae and semen celosiae cristatae. The results show that it is effective to apply continuous wavelet transform on the basis of FTIR to identify the traditional Chinese medicinal materials, which are the same genus but different species.
[1] The Pharmacopoeia Committee of the People’s Republic of China(国家药典委员会). Chinese Pharmacopoeia(中国药典)(2000.Vol.I). Beijing:Chemical Industral Publishing House(北京: 化工业出版社),2000. 157. [2] National Institute for the Control of Pharmaceutical & Biological Products, State Drug Administrate, the People’s Republic of China;Guangdong Provincial Institute for Drug Control(中国药品生物制品检定所,广东省药品检定所). Photo Album for Traditional Chinese Herbal Medicines and Their Confusable Varieties Identification (中国中药材真伪鉴别图典)(3). Guangzhou:Guangdong Science & Technology Press(广州: 广东科技出版社),1997. 114. [3] CHENG Cun-gui(程存归). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2003,23(2):282. [4] WANG Zhao, SUN Su-qin, LI Xiao-bo, et al(王 钊,孙素琴,李晓波, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2001,21(3):311. [5] CHENG Cun-gui,RUAN Yong-ming,LI Bing-lan(程存归,阮永明,李冰岚). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2004,24(11):1355. [6] CHENG Cun-gui,SUN Cui-rong,PAN Yuan-jiang(程存归,孙翠荣,潘远江). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2004,24(9):1055. [7] CHENG Cun-gui,YING Tao-kai(程存归,应桃开). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2005,25(1):36. [8] CHENG Cun-gui, GUO Shui-liang, CHEN Jian-hua(程存归,郭水良,陈建华). Spectroscopy and Spectral Analysis(光谱学与光谱分析),2002,22(6):954. [9] YANG Fu-sheng(杨福生). Engineering Analysis and Application of Wavelet Transform(小波变换的工程分析与应用). Beijing: Science Press(北京: 科学出版社), 2003. 22. [10] PENG Yu-hua(彭玉华). Wavelet Transform and Its Engineering Application(小波变换与工程应用). Beijing: Science Press(北京: 科学出版社), 2000. 16.