Document Detail


Hydrolysis kinetics of secoisolariciresinol diglucoside oligomers from flaxseed.
MedLine Citation:
PMID:  18925741     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Flaxseed is the richest dietary source of the lignan secoisolariciresinol diglucoside (SDG) and contains the largest amount of SDG oligomers, which are often hydrolyzed to break the ester linkages for the release of SDG and the glycosidic bonds for the release of secoisolariciresinol (SECO). The alkaline hydrolysis reaction kinetics of SDG oligomers from flaxseed and the acid hydrolysis process of SDG and other glucosides were investigated. For the kinetic modeling, a pseudo-first-order reaction was assumed. The results showed that the alkaline hydrolysis of SDG oligomers followed first-order reaction kinetics under mild alkaline hydrolytic conditions and that the concentration of sodium hydroxide had a strong influence on the activation energy of the alkaline hydrolysis of SDG oligomers. The results also indicated that the main acid hydrolysates of SDG included secoisolariciresinol monoglucoside (SMG), SECO, and anhydrosecoisolariciresinol (anhydro-SECO) and that the extent and the main hydrolysates of the acid hydrolysis reaction depended on the acid concentration, hydrolysis temperature, and time. In addition, the production and change of p-coumaric acid glucoside, ferulic acid glucoside and their methyl esters and p-coumaric acid, ferulic acid, and their methyl esters during the process of hydrolysis was also investigated.
Authors:
Jian-Ping Yuan; Xin Li; Shi-Ping Xu; Jiang-Hai Wang; Xin Liu
Publication Detail:
Type:  Journal Article     Date:  2008-10-17
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  56     ISSN:  1520-5118     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2008 Nov 
Date Detail:
Created Date:  2008-11-07     Completed Date:  2008-12-31     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  10041-7     Citation Subset:  IM    
Affiliation:
State Key Laboratory of Biocontrol/Food Engineering Research Center of State Education Ministry, College of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, People's Republic of China.
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MeSH Terms
Descriptor/Qualifier:
Butylene Glycols / chemistry*
Flax / chemistry*
Glucosides / chemistry*
Glycosides / chemistry
Hydrolysis
Kinetics
Seeds / chemistry*
Chemical
Reg. No./Substance:
0/Butylene Glycols; 0/Glucosides; 0/Glycosides; 148244-82-0/secoisolariciresinol diglucoside

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


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