Document Detail

Use of ascorbic and citric acids to increase dialyzable iron from vinal (Prosopis ruscifolia) pulp.
MedLine Citation:
PMID:  15678727     Owner:  NLM     Status:  MEDLINE    
Vinal (Prosopis ruscifolia) is an ecologically important wild leguminous tree that grows spontaneously in Argentine deforested lands, the fruit of which is consumed by humans and animals. Because considerable iron content with low to intermediate availability has been previously reported in vinal pulps, its enhancement would be of interest. Iron availability was determined as iron dialyzability using an in vitro technique. Response surface methodology was used to evaluate iron availability increase after adding ascorbic and/or citric acids to vinal pulp at different mM acid/mM Fe ratios. Those ratios ranged from 0.05:1 to 9.95:1 and from 0.5:1 to 99.5:1 for ascorbic acid/Fe (AA:Fe) and citric acid/Fe (CA:Fe), respectively. The obtained second- and first-order polynomial equations showed that AA:Fe and CA:Fe molar ratios linear terms had a significant effect on iron dialyzability increase (P < or = 0.05). It was possible to enhance iron availability to a maximum of 4.6 times. Additional confirmatory experiments were made adding the same organic acids to different vinal pulps and to a traditional cake prepared with vinal pulp called "patay." There were no significant differences (p > 0.05) between predicted values obtained by the model and experimental results.
C Bernardi; M Freyre; M E Sambucetti; M E Pirovani
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Publication Detail:
Type:  In Vitro; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Plant foods for human nutrition (Dordrecht, Netherlands)     Volume:  59     ISSN:  0921-9668     ISO Abbreviation:  Plant Foods Hum Nutr     Publication Date:  2004  
Date Detail:
Created Date:  2005-01-31     Completed Date:  2005-03-03     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8803554     Medline TA:  Plant Foods Hum Nutr     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  175-9     Citation Subset:  IM    
Instituto de Tecnología de Alimentos, Facultad de Ingeniería Química, Universidad Nacional del Litoral, Casilla de Correo, 266-3000 Santa Fe, Argentina.
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MeSH Terms
Ascorbic Acid / pharmacology*
Biological Availability
Citric Acid / pharmacology*
Dose-Response Relationship, Drug
Iron / pharmacokinetics*
Nutritive Value
Prosopis / chemistry*
Reg. No./Substance:
50-81-7/Ascorbic Acid; 7439-89-6/Iron; 77-92-9/Citric Acid

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