Abstract Title:

Changes in serum lipids and postprandial glucose and insulin concentrations after consumption of beverages with beta-glucans from oats or barley: a randomised dose-controlled trial.

Abstract Source:

Eur J Clin Nutr. 2005 Nov;59(11):1272-81 PMID: 16015250

Abstract Author(s):

M Biörklund, A van Rees, R P Mensink, G Onning

Abstract:

OBJECTIVES: To investigate side by side the effects on serum lipoproteins and postprandial glucose and insulin concentrations of beverages enriched with 5 or 10 g of beta-glucans from oats or barley. DESIGN AND SETTING: An 8-week single blind, controlled study with five parallel groups carried out at two centres under identical conditions. SUBJECTS: A total of 100 free-living hypercholesterolaemic subjects were recruited locally and 89 completed the study. INTERVENTIONS: During a 3-week run-in period all subjects consumed a control beverage. For the following 5-week period four groups received a beverage with 5 or 10 g beta-glucans from oats or barley and one group continued with the control beverage. Blood samples in weeks 0, 2, 3, 7 and 8 were analysed for serum lipids, lipoproteins, glucose and insulin. Postprandial concentrations of glucose and insulin were compared between control and the beverage with 5 g of beta-glucans from oats or barley. RESULTS: Compared to control, 5 g of beta-glucans from oats significantly lowered total-cholesterol by 7.4% (P<0.01), and postprandial concentrations of glucose (30 min, P=0.005) and insulin (30 min, P=0.025). The beverage with 10 g of beta-glucans from oats did not affect serum lipids significantly in comparison with control. No statistically significant effects compared to control of the beverages with barley beta-glucans were found. CONCLUSIONS: A daily consumption of 5 g of oat beta-glucans in a beverage improved the lipid and glucose metabolism, while barley beta-glucans did not.

Study Type : Human Study

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