Document Detail

Olive fruit cell wall: degradation of cellulosic and hemicellulosic polysaccharides during ripening.
MedLine Citation:
PMID:  11308360     Owner:  NLM     Status:  MEDLINE    
Cellulose and hemicelluloses obtained from the cell walls of partially depectinated olives have been studied at three stages of ripening (green, cherry, and black). Hemicelluloses were fractionated into two groups, the amounts of which diminished during ripening: those soluble in 4% KOH diminished between the cherry and black stages, whereas those soluble in 24% KOH did so between the green and cherry stages. Arabinoxylans, xyloglucans, and homo- and/or rhamnogalacturonans to a lesser extent were present in these fractions. After ion exchange and size exclusion chromatographies, decreases in the molecular weights of hemicelluloses, mainly in the neutral fractions, were observed. The amount of cellulose also decreased, but at the second stage of the ripening process. Approximately 2 mg/fruit of glucose was lost from cellulose, and the amount of uronic acids increased (0.23 mg/fruit).
A Jiménez; R Rodríguez; I Fernández-Caro; R Guillén; J Fernández-Bolaños; A Heredia
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  49     ISSN:  0021-8561     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2001 Apr 
Date Detail:
Created Date:  2001-04-19     Completed Date:  2001-08-30     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2008-13     Citation Subset:  IM    
Departamento de Biotecnología de los Alimentos, Instituto de la Grasa, Consejo Superior de Investigaciones Científicas, Apartado 1078, 41012 Sevilla, Spain.
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MeSH Terms
Cell Wall / chemistry
Cellulose / analysis,  metabolism*
Chemical Fractionation
Chromatography, Ion Exchange
Food Handling
Fruit / chemistry*,  metabolism,  ultrastructure
Molecular Weight
Particle Size
Polysaccharides / analysis,  metabolism*
Reg. No./Substance:
0/Polysaccharides; 8024-50-8/hemicellulose; 9004-34-6/Cellulose

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