Comparative evaluation of the effects of two different forms of dietary fibre (rice bran vs. wheat bran) on rat colonic mucosa and faecal microflora

Annals of Nutrition & Metabolism
G GestelJ M Rouanet

Abstract

The aim of the study was to compare the physiological consequences of two dietary fibre sources on the faecal microflora and colonic mucosal growth in rats. The studied sources, a moderately well-soluble fibre (rice bran, RB) and a less well-soluble fibre (wheat bran, WB), were included in diets of rats at a level of 10% for 3 weeks and compared with a totally fibre-deprived diet. RB significantly increased faecal water compared to the control diet (p < 0.05). Faecal nitrogen content and bacterial mass, as estimated from the 2,6-diaminopimelic acid (DAPA) output, were greatly and significantly increased by RB, and to a lesser extent by WB, compared to the control diet. Total bile acid excretion was significantly higher by rats fed RB than by those fed WB. Faecal bacterial enzyme activities tested (beta-glucuronidase, mucinase and nitroreductase) were significantly reduced by the two different fibre sources, but RB was more effective than WB, except for nitroreductase activity which was reduced at the same level for each fibre source. Although measurements of mucosal colonic weight and RNA content were significantly different between groups fed RB and WB (p < 0.05), DNA content and the ratio RNA/DNA did not significantly differ ...Continue Reading

Citations

Sep 18, 2012·Advances in Nutrition·Angela J HendersonElizabeth P Ryan
Nov 18, 2004·Regulatory Toxicology and Pharmacology : RTP·Michael T Flood, Mitsuru Kondo
Oct 6, 2012·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Yonglin GaoSusan Cho
Sep 7, 2002·The British Journal of Nutrition·C I R Gill, I R Rowland
Jun 4, 2002·The Journal of Nutrition·Meri Stratton-PhelpsAndrea J Fascetti
Aug 5, 2016·Journal of Animal Science and Technology·Kwang Suk Ko, Andrea J Fascetti
Jan 12, 2013·Journal of Animal Science·T HerfelJ Odle

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