High wholegrain barley β-glucan lowers food intake but does not alter small intestinal macronutrient digestibility in ileorectostomised rats. (17th August 2016)

• Record Type: Journal Article
• Authors: Belobrajdic, Damien P.; Hino, Shingo; Kondo, Takashi; Jobling, Stephen A.; Morell, Matthew K.; Topping, David L.; Morita, Tatsuya; Bird, Anthony R.
• Is Part Of: International journal of food sciences and nutrition. Volume 67:Number 6(2016)
• Page Start: 678
• Page End: 685
• Publication Date: 2016-08-17
• Subjects: Barley -- beta-glucan -- fat -- fibre -- ileorectostomy -- macronutrient digestibility -- protein -- rat -- satiety -- starch -- wholegrain; Food -- Analysis -- Periodicals; Nutrition -- Periodicals; 641.3
• DOI: 10.1080/09637486.2016.1194811
• Languages: English
• ISSNs: 0963-7486

Abstract

Abstract: Using barley cultivars differing widely in β-glucan content, we aimed to determine their effects on small intestinal macronutrient digestion in 24 ileorectostomised rats. The rats were fed 1 of 4 experimental diets, each containing a different barley variety, for 11 d. The diets had a content of 0, 2.1, 2.6 and 4.3 g of β-glucan/100 g. Feed intake and faecal excretion of fat, protein, starch, and non-starch polysaccharides were determined in the final 5 d of the study and apparent macronutrient digestibility calculated. Higher dietary levels of β-glucan (2.6% and 4.3%) lowered feed intake (by 15 and 19%, respectively) but final body weight was only lowered by the 4.3% β-glucan diet relative to rats fed the 0% β-glucan diet (all p s < 0.05). Protein, lipid and starch digestibility was unrelated to the dietary β-glucan content. Higher dietary levels of barley β-glucan lower feed intake of ileorectostomised rats, which is independent of intestinal fermentation and unrelated to macronutrient digestibility.