Document Detail

Metabolizable energy of diets low or high in dietary fiber from cereals when eaten by humans.
MedLine Citation:
PMID:  2841437     Owner:  NLM     Status:  MEDLINE    
The metabolizable energy (ME) of two diets that differed in their content of dietary fiber (DF) from cereal products was measured in balance experiments in six human subjects. DF intake was 19.7 g/d with the low fiber diet and 48.3 g/d with the high fiber diet. Daily gross energy intakes were 2114 kcal (8845 kJ) and 2341 kcal (9795 kJ)/d with the low and the high fiber diets, respectively. DF contributed 83 kcal (347 kJ) and 203 kcal (849 kJ) to daily gross energy intake with the low and the high fiber diets, respectively, when heat of combustion of DF of 4.2 kcal (17.6 kJ)/g was assumed. Increasing the intake of DF resulted in an increase in stool weight and a greater fecal energy loss. Total energy losses were 253 kcal (1056 kJ) and 409 kcal (1711 kJ)/d with the low and the high fiber diets, respectively. ME provided by the low and the high fiber diet were 1861 kcal (7786 kJ) and 1932 kcal (8083 kJ)/d. The total increase in energy losses due to the increase in DF consumption exceeded the gross energy provided by additional DF. Compared with the low fiber diet, ME provided by protein and fat was decreased during the high fiber diet. Calculation of the apparent digestibility of DF indicated that fiber may have provided ME in the form of short-chain fatty acids during the low as well as during the high fiber intake. However, estimation of the amount of fecal gross energy indicated that available components of the diet, such as starch, must have been utilized incompletely during both experimental periods.
E Wisker; A Maltz; W Feldheim
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  The Journal of nutrition     Volume:  118     ISSN:  0022-3166     ISO Abbreviation:  J. Nutr.     Publication Date:  1988 Aug 
Date Detail:
Created Date:  1988-09-14     Completed Date:  1988-09-14     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0404243     Medline TA:  J Nutr     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  945-52     Citation Subset:  IM    
Department of Human Nutrition and Food Science, University of Kiel, Federal Republic of Germany.
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MeSH Terms
Dietary Fiber / administration & dosage*,  metabolism,  urine
Energy Intake
Energy Metabolism*
Feces / analysis
Polysaccharides / analysis
Reg. No./Substance:

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