Lack of effect of purified cellulose and hemicellulose on the digestion and the intestinal absorption of dietary lipids in the rat
1989
Borel, P. | Lairon, D. | Senft, M. | Garzino, P. | Lafont, H.
Fasted adult rats were intragastrically intubated an emulsified test meal containing both 14C-triolein and 3H-cholesterol, in the presence or absence of either purified hemicellulose (xylan) or cellulose (both 10% of meal solids). After a 1-hour digestion period, purified fibers did not significantly modify the rate of gastric emptying of lipids or the extent of triglyceride lipolysis in the stomach and the small intestine. The prescence of cellulose or hemicellulose induced no change in the amounts of lipids and cholesterol found in the intestinal content, the mucosa, and the plasma, nor in the site of lipid mucosal uptake. As a whole, the present results show that cellulose or hemicellulose, which are the main fractions of dietary fiber in cereals, did not exert a determinant influence on the biochemical events involved in the digestion of dietary fats.
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