Sugar and dietary fibre composition influence, by different hormonal response, the satiating capacity of a fruit-based and a beta-glucan-enriched beverage.

摘要

Satiating capacity of 3 beverages containing 3 g barley beta-glucan or 2.5 g dietary fibre (DF) from fruit, or without DF (control), was evaluated. 14 healthy volunteers were randomized to have isocaloric breakfasts including 1 of the beverages on different occasions. Appetite ratings over 3 h post-breakfast and energy intakes at ad libitum lunch, blood glucose, insulin, ghrelin, PYY, GLP-1, GIP and PP concn. and 24 h food intake, were assessed. Beverages containing DF increased fullness and satiety over 3 h post-breakfast, but only beta-glucan-enriched vs. the control reduced energy intakes by 18% at lunch and 40% over the rest of the day. Blood ghrelin and PP responses were differently modulated by beverages. Fruit-based and beta-glucan-enriched beverage suppressed by 8.9% and 8.1% ghrelin response over the 3 h and 1st h post-breakfast, respectively, while only the latter increased PP response by 34.6%, compared to the control. A sucrose-sweetened beverage providing 3 g barley beta-glucans can control food intake by modulating PP response and reduce 24 h energy intake. Ghrelin suppression by fruit dietary fibre and mixed sugars was not sufficient to markedly reduce food intake compared to the control.