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Short-chain fatty acid formation in the hindgut of rats fed native and fermented oat fibre concentrates

Lambo, Adele LU ; Öste, Rickard LU and Nyman, Margareta LU (2006) In British Journal of Nutrition 96(1). p.47-55
Abstract
The formation of SCFA in rats fed fermented oat fibre concentrates was compared with that of rats fed native oat fibre concentrate. The cultures used were lactic acid bacteria consisting of Lactobacillus bulgaricus and Streptococcus thermophilus (V2), the exopolysaccharide-producing strain Pediococcus damnosus 2.6 (Pd) and L. reuteri (Lr). The materials were incorporated into test diets yielding a concentration of indigestible carbohydrates of 80 g/kg (dry weight). Rats fed the V2-fermented fibre-concentrate diet yielded higher caecal and distal concentrations of acetic acid (P < 0 center dot 01) than rats fed the native fibre concentrate. All the fermented fibre concentrates resulted in a higher propionic acid concentration in the... (More)
The formation of SCFA in rats fed fermented oat fibre concentrates was compared with that of rats fed native oat fibre concentrate. The cultures used were lactic acid bacteria consisting of Lactobacillus bulgaricus and Streptococcus thermophilus (V2), the exopolysaccharide-producing strain Pediococcus damnosus 2.6 (Pd) and L. reuteri (Lr). The materials were incorporated into test diets yielding a concentration of indigestible carbohydrates of 80 g/kg (dry weight). Rats fed the V2-fermented fibre-concentrate diet yielded higher caecal and distal concentrations of acetic acid (P < 0 center dot 01) than rats fed the native fibre concentrate. All the fermented fibre concentrates resulted in a higher propionic acid concentration in the distal colon (P < 0 center dot 05), while rats fed Pd-fermented fibre concentrate resulted in lower concentration of butyric acid (P < 0 center dot 05, P < 0 center dot 01) in all parts of the hindgut as compared with rats fed the native fibre concentrates. Butyrate concentrations ranged between 5-11 mu mol/g (distal colon) and 6-8 mu mol/g (13 d faeces). Higher proportions of acetic acid (P < 0 center dot 05; P < 0 center dot 01) were observed in the caecum of rats fed the fermented fibre concentrates. Rats fed Pd- and Lr-fermented fibre concentrates produced higher proportions of propionic acid (P < 0 center dot 05; P < 0 center dot 01) in the caecum. Changes in SCFA formation in the caecum, distal colon and faeces of rats fed the fermented samples compared with the native sample indicate that these microbes probably survive in the hindgut and that modification of the microflora composition with fermented foods is possible. This may be important for the gastrointestinal flora balance in relation to colonic diseases. (Less)
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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
lactic acid, short-chain fatty acids, fermented oat fibre concentrate, bacteria, rat hindgut
in
British Journal of Nutrition
volume
96
issue
1
pages
47 - 55
publisher
Cambridge University Press
external identifiers
  • wos:000239283600008
  • pmid:16869990
  • scopus:33746780618
ISSN
1475-2662
DOI
10.1079/BJN20061797
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Applied Nutrition and Food Chemistry (011001300)
id
6bb8fa11-dc00-4aa4-87a8-1aa245175d68 (old id 399609)
date added to LUP
2016-04-01 12:35:47
date last changed
2021-09-22 02:12:52
@article{6bb8fa11-dc00-4aa4-87a8-1aa245175d68,
  abstract     = {The formation of SCFA in rats fed fermented oat fibre concentrates was compared with that of rats fed native oat fibre concentrate. The cultures used were lactic acid bacteria consisting of Lactobacillus bulgaricus and Streptococcus thermophilus (V2), the exopolysaccharide-producing strain Pediococcus damnosus 2.6 (Pd) and L. reuteri (Lr). The materials were incorporated into test diets yielding a concentration of indigestible carbohydrates of 80 g/kg (dry weight). Rats fed the V2-fermented fibre-concentrate diet yielded higher caecal and distal concentrations of acetic acid (P &lt; 0 center dot 01) than rats fed the native fibre concentrate. All the fermented fibre concentrates resulted in a higher propionic acid concentration in the distal colon (P &lt; 0 center dot 05), while rats fed Pd-fermented fibre concentrate resulted in lower concentration of butyric acid (P &lt; 0 center dot 05, P &lt; 0 center dot 01) in all parts of the hindgut as compared with rats fed the native fibre concentrates. Butyrate concentrations ranged between 5-11 mu mol/g (distal colon) and 6-8 mu mol/g (13 d faeces). Higher proportions of acetic acid (P &lt; 0 center dot 05; P &lt; 0 center dot 01) were observed in the caecum of rats fed the fermented fibre concentrates. Rats fed Pd- and Lr-fermented fibre concentrates produced higher proportions of propionic acid (P &lt; 0 center dot 05; P &lt; 0 center dot 01) in the caecum. Changes in SCFA formation in the caecum, distal colon and faeces of rats fed the fermented samples compared with the native sample indicate that these microbes probably survive in the hindgut and that modification of the microflora composition with fermented foods is possible. This may be important for the gastrointestinal flora balance in relation to colonic diseases.},
  author       = {Lambo, Adele and Öste, Rickard and Nyman, Margareta},
  issn         = {1475-2662},
  language     = {eng},
  number       = {1},
  pages        = {47--55},
  publisher    = {Cambridge University Press},
  series       = {British Journal of Nutrition},
  title        = {Short-chain fatty acid formation in the hindgut of rats fed native and fermented oat fibre concentrates},
  url          = {http://dx.doi.org/10.1079/BJN20061797},
  doi          = {10.1079/BJN20061797},
  volume       = {96},
  year         = {2006},
}