Document Detail


Chemical characterization of lignin and lipophilic fractions from leaf fibers of curaua (Ananas erectifolius).
MedLine Citation:
PMID:  17253715     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The chemical composition of leaf fibers of curaua (Ananas erectifolius), an herbaceous plant native of Amazonia, was studied. Special attention was paid to the content and composition of lignin and lipophilic compounds. The analysis of lignin in the curaua fibers was performed in situ by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) and showed a lignin composition with a p-hydroxyphenyl:guaiacyl:syringyl units (H:G:S) molar proportion of 30:29:41 (S/G molar ratio of 1.4). The presence of p-hydroxycinnamic acids (p-coumaric and ferulic acids) in curaua fibers was revealed upon pyrolysis in the presence of tetramethylammonium hydroxide. On the other hand, the main lipophilic compounds, analyzed by GC/MS, were series of long-chain n-fatty acids, n-fatty alcohols, alpha- and omega-hydroxyacids, monoglycerides, sterols, and waxes. Other compounds, such as omega-hydroxy monoesters and omega-hydroxy acylesters of glycerol, were also found in this fiber in high amounts.
Authors:
Gisela Marques; Ana Gutiérrez; José C del Río
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-01-25
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  55     ISSN:  0021-8561     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2007 Feb 
Date Detail:
Created Date:  2007-02-15     Completed Date:  2007-06-06     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1327-36     Citation Subset:  IM    
Affiliation:
Instituto de Recursos Naturales y Agrobiología de Sevilla, CSIC, P.O. Box 1052, 41080 Seville, Spain.
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MeSH Terms
Descriptor/Qualifier:
Ananas / chemistry*
Gas Chromatography-Mass Spectrometry
Hot Temperature
Lignin / analysis*
Lipids / analysis
Plant Leaves / chemistry*
Chemical
Reg. No./Substance:
0/Lipids; 9005-53-2/Lignin

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


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