NDLI: Determination of endpoint of procedure for processing radix rehmanniae based on analysis of UV spectral data of the water steam extracts by CWT and kernel ICA

Content Provider	IEEE Xplore Digital Library
Author	Chun-hong Dong Xiao-li Sun Yu-an Sun Guo-qing Wang Cun-hong Li De-xue Fu
Copyright Year	2010
Description	Author affiliation: Department of Applied Chemistry, Zhengzhou University of Light Industry, Zhengzhou, China (Xiao-li Sun; Yu-an Sun; Guo-qing Wang) \|\| Research Center for Huai Chinese Medicines, Jiaozuo University, Jiaozuo, China (Chun-hong Dong; Cun-hong Li; De-xue Fu)
Abstract	The UV spectra of the water steam extracts (WSEs), not that of the conventional rehmanniae sample itself, during the procedure of processing radix rehmanniae were measured. The raw spectral data were preprocessed by continuous wavelet transform (CWT) for elimination of the noise and enhancement of the spectral resolution, and the independent components (ICs) were estimated by kernel ICA (KICA) from the CWT coefficient matrix. The results show the ICs that were estimated from rehmanniae samples from different producing areas are similar, and their change trends are also similar. The ICs' relative concentrations are gradually decreasing or increasing at the initial procedure 1 h to 14 h and then gradually tend to stable after 16 h. Based on the variation of the ICs' relative concentrations, the procedure endpoint can be determined at 15 h, while that of the conventional sensory analysis is 14 h to 20 h made by different operators. The proposed UV-CWT-KICA method for analysis of the UV spectra of the WSE provides an alternative relatively inexpensive approach for endpoint determination of the traditional Chinese medicine (TCM) processing procedure.
Starting Page	4051
Ending Page	4055
File Size	1386417
Page Count	5
File Format	PDF
ISBN	9781424465132
e-ISBN	9781424465163
DOI	10.1109/CISP.2010.5647511
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-10-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Kernel independent component analysis (KICA) Continuous wavelet transforms Radix rehmanniae Independent component analysis Wavelet analysis Continuous wavelet transform (CWT) water steam extract (WSE) Kernel Sun Process monitor UV spectrometry
Content Type	Text
Resource Type	Article

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