Document Detail

Maillard reaction involved in the steaming process of the root of Polygonum multiflorum.
MedLine Citation:
PMID:  19034829     Owner:  NLM     Status:  MEDLINE    
The steaming process is one of traditional Chinese medicine's processing approaches for many herbs. A new HPLC peak was found in the root of Polygonum multiflorum Thunb. (PM) after steaming. 2,3-dihydro-3,5-dihydroxy-6-methyl-4(H)-pyran-4-one (DDMP) and 5-hydroxymethyl furfural (5-HMF) were confirmed in the new peak. Additionally, two other compounds, butanedioic acid and 3,5-dihydroxy-2-methyl- 4(H)-pyran-4-one (hydroxymaltol), were isolated in the processed root of PM. An increase in DDMP concentration was observed during the first 24 h of steaming, followed by a constant decrease until 64 h of steaming. The amount of 5-HMF increased gradually throughout the steaming process. Changes to 16 kinds of amino acid were found after the steaming process. Drastic changes in the concentration of D-glucose, D-fructose, and sucrose were observed during the first 16 h, followed by steady value changes to 64 h of steaming using HPLC-ELSD. The pH values decreased from 6.28 to 5.61 during the 64-h steaming process. The production of DDMP, 5-HMF, butanedioic acid, and hydroxymaltol and the changes in amino acid, sugar, and pH values suggest that the Maillard reaction was involved in the steaming process of the root of PM, which may contribute to the activity differences between the root of PM and the processed root.
Zhenli Liu; Zhimao Chao; Yuanyan Liu; Zhiqian Song; Aiping Lu
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-11-25
Journal Detail:
Title:  Planta medica     Volume:  75     ISSN:  0032-0943     ISO Abbreviation:  Planta Med.     Publication Date:  2009 Jan 
Date Detail:
Created Date:  2009-01-21     Completed Date:  2009-04-20     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0066751     Medline TA:  Planta Med     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  84-8     Citation Subset:  IM    
Institution of Basic Theory, China Academy of Chinese Medical Sciences, Beijing, PR China.
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MeSH Terms
Amino Acids / chemistry
Carbohydrates / chemistry
Chromatography, High Pressure Liquid
Furaldehyde / analogs & derivatives,  chemistry,  isolation & purification
Hydrogen-Ion Concentration
Maillard Reaction*
Plant Roots / chemistry
Polygonum / chemistry*
Pyrones / chemistry,  isolation & purification
Succinic Acid / chemistry,  isolation & purification
Time Factors
Reg. No./Substance:
0/2,3-dihydro-3,5-dihydroxy-6-methyl-4H-pyran-4-one; 0/3,5-dihydroxy-2-methyl- 4(H)-pyran-4-one; 0/Amino Acids; 0/Carbohydrates; 0/Pyrones; 0/Steam; 110-15-6/Succinic Acid; 67-47-0/5-hydroxymethylfurfural; 98-01-1/Furaldehyde

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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