High-fiber rye diet increases ileal excretion of energy and macronutrients compared with low-fiber wheat diet independent of meal frequency in ileostomy subjects

  • Hanna Isaksson Swedish University of Agricultural Sciences
  • Rikard Landberg Swedish University of Agricultural Sciences
  • Birgitta Sundberg Swedish University of Agricultural Sciences
  • Eva Lundin Nutrition Research, Department of Public Health and Clinical Medicine, University of Umeå, SE-90187 Umeå, Sweden Department of Medical Biosciences/Pathology, University of Umeå, Umeå, Sweden
  • Göran Hallmans Department of Medical Biosciences/Pathology, University of Umeå, Umeå, Sweden
  • Jie- Xian Zhang Department of Medical Biosciences/Pathology, University of Umeå, Umeå, Sweden
  • Per Tidehag Department of Medical Biosciences/Pathology, University of Umeå, Umeå, Sweden
  • Knud Erik Bach Knudsen Department of Animal Health and Bioscience, Research Centre Foulum, Aarhus University, DK-8830 Tjele, Denmark
  • Ali A. Moazzami Swedish University of Agricultural Sciences
  • Per Åman Swedish University of Agricultural Sciences
Keywords: rye bread, refined wheat, meal frequency, ileal excretion, ileostomy

Abstract

Background:Whole-grain foods and cereal dietary fiber intake is associated with lower body weight. This may partly result from lower energy utilization of high-fiber diets.

Objective: In the present study, the impact on ileal excretion of energy and macronutrients in response to a rye bread high-fiber diet compared to a refined wheat low-fiber diet was investigated. Furthermore, the effect of meal frequency on apparent absorption of nutrients was studied for the first time.

Design: Ten participants that had undergone ileostomy consumed standardized iso-caloric diets, including low-fiber wheat bread (20 g dietary fiber per day) for 2 weeks followed by high-fiber rye bread (52 g dietary fiber per day) for 2 weeks. The diets were consumed in an ordinary (three meals per day) and a nibbling (seven meals per day) meal frequency in a cross-over design. Ileal effluents were collected during 24 h at the third day of each of the four dietary periods and analyzed for gross energy and nutrient contents.

Results: The results showed that intake of rye bread high-fiber diet compared to the refined wheat low-fiber diet caused an increase in ileal excretion of energy and macronutrients. The effect was independent of meal frequency. This suggests that a high intake of rye may result in lower availability of macronutrients for small intestinal digestion and absorption. A regular intake of rye may therefore have implications for weight management.

Keywords: rye bread; refined wheat; meal frequency; ileal excretion; ileostomy

(Published: 12 December 2013)

Citation: Food & Nutrition Research 2013. 57: 18519 - http://dx.doi.org/10.3402/fnr.v57i0.18519

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Published
2013-12-11
How to Cite
1.
Isaksson H, Landberg R, Sundberg B, Lundin E, Hallmans G, Zhang J- X, Tidehag P, Bach Knudsen KE, Moazzami A, Åman P. High-fiber rye diet increases ileal excretion of energy and macronutrients compared with low-fiber wheat diet independent of meal frequency in ileostomy subjects. fnr [Internet]. 2013Dec.11 [cited 2019Jul.18];00. Available from: https://foodandnutritionresearch.net/index.php/fnr/article/view/520
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Original Articles