Document Detail

Water-binding capacity and viscosity of Australian sweet lupin kernel fibre under in vitro conditions simulating the human upper gastrointestinal tract.
MedLine Citation:
PMID:  16019318     Owner:  NLM     Status:  MEDLINE    
There is currently little understanding of the physicochemical properties in the human gastrointestinal tract of Australian sweet lupin (Lupinus angustifolius) kernel fibre (LKF), a novel food ingredient with potential for the fibre enrichment of foods such as baked goods. Since physicochemical properties of dietary fibres have been related to beneficial physiological effects in vivo, this study compared water-binding capacity and viscosity of LKF with that of other fibres currently used for fibre-enrichment of baked goods, under in vitro conditions simulating the human upper gastrointestinal tract. At between 8.47 and 11.07 g water/g dry solids, LKF exhibited water-binding capacities that were significantly higher (P < 0.05) than soy fibre, pea hull fibre, cellulose and wheat fibre at all of the simulated gastrointestinal stages examined. Similarly, viscosity of LKF was significantly higher (P < 0.05) than that of the other fibres at all simulated gastrointestinal stages. The relatively high water-binding capacity and viscosity of LKF identified in this study suggests that this novel fibre ingredient may elicit different and possibly more beneficial physiological effects in the upper human gastrointestinal tract than the conventional fibre ingredients currently used in fibre-enriched baked goods manufacture. We are now performing human studies to investigate the effect of LKF in the diet on health-related gastrointestinal events.
Cathryn M Turnbull; Amynta L Baxter; Stuart K Johnson
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  International journal of food sciences and nutrition     Volume:  56     ISSN:  0963-7486     ISO Abbreviation:  Int J Food Sci Nutr     Publication Date:  2005 Mar 
Date Detail:
Created Date:  2005-07-15     Completed Date:  2005-09-22     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9432922     Medline TA:  Int J Food Sci Nutr     Country:  England    
Other Details:
Languages:  eng     Pagination:  87-94     Citation Subset:  IM    
School of Exercise and Nutrition Sciences, Faculty of Health and Behavioural Sciences, Deakin University, Burwood, Victoria, Australia.
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MeSH Terms
Absorption / physiology
Dietary Fiber* / analysis
Digestion / physiology
Duodenum / physiology
Food Additives
Gastric Emptying / physiology
Lupinus / physiology*
Mouth / physiology
Stomach / physiology
Upper Gastrointestinal Tract / physiology*
Water / chemistry
Reg. No./Substance:
0/Food Additives; 7732-18-5/Water

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

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