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Intestinal degradation of dietary fibre in green beans--effects of microwave treatments

Svanberg, M LU ; Suortti, T and Nyman, Margareta LU (1999) In International Journal of Food Sciences and Nutrition 50(4). p.53-245
Abstract

Intestinal degradation of dietary fibre in blanched and microwaved green beans was studied by using a rat experimental model. Content and composition of dietary fibre as well as molecular weight distribution of water-soluble polysaccharides (WSP) were analysed. There was a solubilization and a shift towards lower Mw of mainly uronic acid-containing polysaccharides with repeated microwave treatment in the raw material. Thus, the apparent Mw of water-soluble polysaccharides decreased from approximately 1,550,000 to approximately 300,000. After the beans had been digested the Mw of the WSP was significantly reduced, to approximately 100,000, and the differences in Mw seen between various processed raw materials had been evened out. After... (More)

Intestinal degradation of dietary fibre in blanched and microwaved green beans was studied by using a rat experimental model. Content and composition of dietary fibre as well as molecular weight distribution of water-soluble polysaccharides (WSP) were analysed. There was a solubilization and a shift towards lower Mw of mainly uronic acid-containing polysaccharides with repeated microwave treatment in the raw material. Thus, the apparent Mw of water-soluble polysaccharides decreased from approximately 1,550,000 to approximately 300,000. After the beans had been digested the Mw of the WSP was significantly reduced, to approximately 100,000, and the differences in Mw seen between various processed raw materials had been evened out. After fermentation the Mw of the WSP decreased further approximately 10 times. Fibre fermentability was high (approximately 90%) and similar for the various processed beans.

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author
; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Animals, Dietary Fiber/analysis, Digestion/physiology, Fabaceae/radiation effects, Fermentation/physiology, Intestines/metabolism, Microwaves, Molecular Weight, Plants, Medicinal, Rats, Rats, Wistar, Solubility/radiation effects, Uronic Acids/radiation effects
in
International Journal of Food Sciences and Nutrition
volume
50
issue
4
pages
9 pages
publisher
Taylor & Francis
external identifiers
  • pmid:10719570
  • scopus:0032768701
ISSN
0963-7486
DOI
10.1080/096374899101120
language
English
LU publication?
yes
id
084c59a8-2c7b-4d31-afbd-78470e744a44
date added to LUP
2018-10-16 17:21:55
date last changed
2024-01-15 04:12:07
@article{084c59a8-2c7b-4d31-afbd-78470e744a44,
  abstract     = {{<p>Intestinal degradation of dietary fibre in blanched and microwaved green beans was studied by using a rat experimental model. Content and composition of dietary fibre as well as molecular weight distribution of water-soluble polysaccharides (WSP) were analysed. There was a solubilization and a shift towards lower Mw of mainly uronic acid-containing polysaccharides with repeated microwave treatment in the raw material. Thus, the apparent Mw of water-soluble polysaccharides decreased from approximately 1,550,000 to approximately 300,000. After the beans had been digested the Mw of the WSP was significantly reduced, to approximately 100,000, and the differences in Mw seen between various processed raw materials had been evened out. After fermentation the Mw of the WSP decreased further approximately 10 times. Fibre fermentability was high (approximately 90%) and similar for the various processed beans.</p>}},
  author       = {{Svanberg, M and Suortti, T and Nyman, Margareta}},
  issn         = {{0963-7486}},
  keywords     = {{Animals; Dietary Fiber/analysis; Digestion/physiology; Fabaceae/radiation effects; Fermentation/physiology; Intestines/metabolism; Microwaves; Molecular Weight; Plants, Medicinal; Rats; Rats, Wistar; Solubility/radiation effects; Uronic Acids/radiation effects}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{53--245}},
  publisher    = {{Taylor & Francis}},
  series       = {{International Journal of Food Sciences and Nutrition}},
  title        = {{Intestinal degradation of dietary fibre in green beans--effects of microwave treatments}},
  url          = {{http://dx.doi.org/10.1080/096374899101120}},
  doi          = {{10.1080/096374899101120}},
  volume       = {{50}},
  year         = {{1999}},
}