| Title | Artificial fiber complexes composed of cellulose and guar gum or psyllium may be better sources of soluble fiber for rats than comparable fiber mixtures. | | Author(s) | Hara H, Saito Y, Nagata M, Tsuji M, Yamamoto K, Kiriyama S | | Institution | Department of Bioscience and Chemistry, Faculty of Agriculture, Hokkaido University, Sapporo, Japan. | | Source | J Nutr 1994 Aug; 124(8):1238-47. | | MeSH | Animals
Cellulose
Comparative Study
Dietary Fiber
Eating
Energy Metabolism
Fatty Acids
Fermentation
Galactans
Intestinal Mucosa
Intestine, Small
Male
Mannans
Microscopy, Electron, Scanning
Organ Size
Psyllium
Rats
Rats, Sprague-Dawley
Solubility
Weight Gain
| | Abstract | Three fiber complexes composed of cellulose and the same weight of guar gum, cornstarch or psyllium were constructed as three-dimensional networks of cellulose fiber filled with the soluble components. Physiological properties of these fiber complexes were examined in comparison with a mixture of powdered cellulose and the corresponding polysaccharides at a ratio of 1:1 in rats. Another group of rats was fed a fiber-free diet. Body weight gain in the guar gum-cellulose mixture group, but not in guar gum-cellulose complex group, was lower than that of the fiber-free group. The cecal walls in the groups fed the guar gum-cellulose and psyllium-cellulose mixture diets were heavier than those in the corresponding fiber complex-fed groups. Weights of the small intestinal wall and ileal mucosa were also greater in the guar gum-cellulose mixture-fed group than in the guar gum-cellulose complex-fed and the fiber-free diet-fed groups. Fermentable energy in dietary fiber estimated from fecal energy excretion, short-chain fatty acid contents and in vitro short-chain fatty acid production rates in the cecum of the complex-fed groups were similar to those in the fiber mixture-fed groups. However, butyric acid content and production rate in the group fed the guar gum-cellulose complex were markedly higher than in the other groups. The lowering effects of guar gum-cellulose and psyllium-cellulose mixtures on plasma cholesterol concentration tended to be greater than those of guar gum-cellulose and psyllium-cellulose complexes. These findings demonstrate that the artificial fiber complexes supply soluble fibers without increasing mechanical stress to the intestines and decreasing cecal fermentation. | | Language | eng | | Pub Type(s) | Journal Article
| | PubMed ID | 8064372 |
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