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Dietary fibre fermentation in the rat intestinal tract: effect of adaptation period, protein and fibre levels, and particle size.
Br J Nutr. 1985 Nov; 54(3):635-43.BJ

Abstract

1. The fermentative breakdown of one resistant type of dietary fibre (wheat bran) and one easily-fermented fibre (low-methoxyl pectin) was studied with respect to the length of the adaptation period and fibre level in the diet. The breakdown of the resistant fibre was also studied regarding the protein level in the diet and particle size of the fibre. 2. Prolongation of the adaptation period from 4 to 18 d decreased the faecal dry weight considerably. The excretion of dietary fibre however, was similar, whereas a decrease in faecal nitrogen excretion could be seen. 3. A level of dietary protein of less than 50 g/kg impaired the fermentation of wheat-bran fibre, whereas a level higher than 100 g protein/kg did not further increase the degree of fermentation of the fibre. 4. The particle size did not change the fermentability of the fibre, equal amounts of the main components of coarse and milled bran being excreted in faeces. 5. Two different levels of wheat-bran fibre (48 and 96 g/kg) in the diet did not influence the fibre breakdown. Similar results were obtained with two levels of fibre from low-methoxyl pectin (42 and 84 g/kg), but a tendency towards a decreased percentage of faecal excretion of uronic acids was seen at the lower level of low-methoxyl pectin.

Authors+Show Affiliations

Nyman M
Department of Food Chemistry, University of Lund, Sweden.
Asp NG
No affiliation info available

MeSH

Adaptation, PhysiologicalAnimalsDietary FiberDietary ProteinsFecesFermentationIntestinal MucosaMaleParticle SizeRatsRats, Inbred StrainsTime Factors

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

2825760

Citation

Nyman, M, and N G. Asp. "Dietary Fibre Fermentation in the Rat Intestinal Tract: Effect of Adaptation Period, Protein and Fibre Levels, and Particle Size." The British Journal of Nutrition, vol. 54, no. 3, 1985, pp. 635-43.
Nyman M, Asp NG. Dietary fibre fermentation in the rat intestinal tract: effect of adaptation period, protein and fibre levels, and particle size. Br J Nutr. 1985;54(3):635-43.
Nyman, M., & Asp, N. G. (1985). Dietary fibre fermentation in the rat intestinal tract: effect of adaptation period, protein and fibre levels, and particle size. The British Journal of Nutrition, 54(3), 635-43.
Nyman M, Asp NG. Dietary Fibre Fermentation in the Rat Intestinal Tract: Effect of Adaptation Period, Protein and Fibre Levels, and Particle Size. Br J Nutr. 1985;54(3):635-43. PubMed PMID: 2825760.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dietary fibre fermentation in the rat intestinal tract: effect of adaptation period, protein and fibre levels, and particle size. AU - Nyman,M, AU - Asp,N G, PY - 1985/11/1/pubmed PY - 1985/11/1/medline PY - 1985/11/1/entrez SP - 635 EP - 43 JF - The British journal of nutrition JO - Br J Nutr VL - 54 IS - 3 N2 - 1. The fermentative breakdown of one resistant type of dietary fibre (wheat bran) and one easily-fermented fibre (low-methoxyl pectin) was studied with respect to the length of the adaptation period and fibre level in the diet. The breakdown of the resistant fibre was also studied regarding the protein level in the diet and particle size of the fibre. 2. Prolongation of the adaptation period from 4 to 18 d decreased the faecal dry weight considerably. The excretion of dietary fibre however, was similar, whereas a decrease in faecal nitrogen excretion could be seen. 3. A level of dietary protein of less than 50 g/kg impaired the fermentation of wheat-bran fibre, whereas a level higher than 100 g protein/kg did not further increase the degree of fermentation of the fibre. 4. The particle size did not change the fermentability of the fibre, equal amounts of the main components of coarse and milled bran being excreted in faeces. 5. Two different levels of wheat-bran fibre (48 and 96 g/kg) in the diet did not influence the fibre breakdown. Similar results were obtained with two levels of fibre from low-methoxyl pectin (42 and 84 g/kg), but a tendency towards a decreased percentage of faecal excretion of uronic acids was seen at the lower level of low-methoxyl pectin. SN - 0007-1145 UR - https://www.unboundmedicine.com/medline/citation/2825760/Dietary_fibre_fermentation_in_the_rat_intestinal_tract:_effect_of_adaptation_period_protein_and_fibre_levels_and_particle_size_ DB - PRIME DP - Unbound Medicine ER -