Traditional Processing Strongly Affects Metabolite Composition by Hydrolysis in Rehmannia glutinosa Roots

The processing of biological raw materials is considered to have an important role in the therapeutic application in Traditional Chinese Medicine. The root of Rehmannia glutinosa has to be processed by nine cycles of rice wine immersing, steaming and drying before using in clinical applications. In...

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Veröffentlicht in:Chemical & Pharmaceutical Bulletin 2011/05/01, Vol.59(5), pp.546-552
Hauptverfasser: Chang, Wen-Te, Choi, Young Hae, Heijden, Rob Van der, Lee, Meng-Shiou, Lin, Ming-Kuem, Kong, Hongwei, Kim, Hye Kyong, Verpoorte, Robert, Hankemeier, Thomas, Greef, Jan Van der, Wang, Mei
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container_end_page 552
container_issue 5
container_start_page 546
container_title Chemical & Pharmaceutical Bulletin
container_volume 59
creator Chang, Wen-Te
Choi, Young Hae
Heijden, Rob Van der
Lee, Meng-Shiou
Lin, Ming-Kuem
Kong, Hongwei
Kim, Hye Kyong
Verpoorte, Robert
Hankemeier, Thomas
Greef, Jan Van der
Wang, Mei
description The processing of biological raw materials is considered to have an important role in the therapeutic application in Traditional Chinese Medicine. The root of Rehmannia glutinosa has to be processed by nine cycles of rice wine immersing, steaming and drying before using in clinical applications. In order to understand the chemical changes resulting from the processing, a comprehensive analysis of Rehmanniae radix was made using 1H-NMR and Fourier transform (FT)-mass spectrometry in combination with multivariate data analysis. After 1H-NMR and principle component analysis, hydrolysis was found to be the major chemical process during the treatments. Catalpol, raffinose and stachyose levels gradually decreased during processing, whereas monosaccharides including galactose and glucose were found to be higher in processed roots. The metabolic profile changed gradually through the processing cycles although the differences became smaller after the fifth processing cycle. The positive and negative ion-mode mass spectra by high resolution FT-MS revealed several series of ion clusters with mass differences of 162.053 Da, indicating a difference of a hexose moiety. During the processing, the number and signal intensity of the smaller glycosides were increased. Therefore, these results indicate that the fresh Rehmanniae radix is rich in polysaccharides, which are hydrolyzed during the processing.
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Catalpol, raffinose and stachyose levels gradually decreased during processing, whereas monosaccharides including galactose and glucose were found to be higher in processed roots. The metabolic profile changed gradually through the processing cycles although the differences became smaller after the fifth processing cycle. The positive and negative ion-mode mass spectra by high resolution FT-MS revealed several series of ion clusters with mass differences of 162.053 Da, indicating a difference of a hexose moiety. During the processing, the number and signal intensity of the smaller glycosides were increased. 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Therefore, these results indicate that the fresh Rehmanniae radix is rich in polysaccharides, which are hydrolyzed during the processing.</abstract><cop>Japan</cop><pub>The Pharmaceutical Society of Japan</pub><pmid>21532190</pmid><doi>10.1248/cpb.59.546</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record>
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subjects Drugs, Chinese Herbal - analysis
Drugs, Chinese Herbal - chemistry
Drugs, Chinese Herbal - metabolism
Fourier-transform-mass spectrometry
Glucosides - analysis
Glucosides - chemistry
Glucosides - metabolism
Hydrolysis
Mass Spectrometry - methods
Molecular Weight
Plant Roots - chemistry
Principal Component Analysis
principle component analysis
Rehmannia - chemistry
Rehmannia glutinosa
Spectroscopy, Fourier Transform Infrared - methods
traditional processing
title Traditional Processing Strongly Affects Metabolite Composition by Hydrolysis in Rehmannia glutinosa Roots
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