Comparative study on the infrared fingerprint of Abrus cantoniensis based on the methods of sequential analysis of dual-indexes and cluster analysis

• Published in: Guang pu xue yu guang pu fen xi Vol. 30; no. 1; p. 45
• Main Authors: Kong, De-xin, Huang, Shu-shi, Huang, Rong-shao, Chen, Xiu-li, Wang, Yi-bing, Chen, Zhi-cheng
• Format: Journal Article
• Language: Chinese
• Published: China 01.01.2010
• Subjects: Abrus - chemistry; China; Cluster Analysis; Drugs, Chinese Herbal - chemistry; Geography; Spectrophotometry, Infrared; Time Factors; China
• ISSN: 1000-0593
• DOI: 10.3964/j.issn.1000-0593(2010)01-0045-05

The methods of sequential analysis of dual-indexes and cluster analysis were utilized to investigate the infrared fingerprints of A. cantoniensis planted in different years and different places in Guangxi, China. The results showed that 6 samples were able to be completely separated only through 13 point smoothing, when the dual-indexes analysis was applied in the present research, and the accurate relationship between these samples could be inspected and expressed by quantitative relationships under 6-dimensional spaces; however, the effect of cluster was bad only through 13 point smoothing of raw spectra, and it was very difficult to find out the regular sequences while the cluster analysis was applied. Furthermore, the 6 samples were able to be completely separated if raw spectra were dealed with 1st derivative after 13 point smoothing, and the clustering effects were more obvious and 6 samples of A. cantoniensis were completely separated. The above two methods could be used to evaluate the quality of Chin