Dietary fiber and satiety: the effects of oats on satiety

This review examines the effect of β-glucan, the viscous soluble fiber in oats, on satiety. A literature search for studies that examined delivery of the fiber in whole foods or as an extract was conducted. Viscosity interferes with the peristaltic mixing process in the small intestine to impede dig...

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Bibliographic Details
Published in:Nutrition reviews 2016-02, Vol.74 (2), p.131-147
Main Authors: Rebello, Candida J., O’Neil, Carol E., Greenway, Frank L.
Format: Article
Language:English
Subjects:
Appetite
Appetite - drug effects
Avena - chemistry
beta-Glucans - pharmacology
Diet
Dietary fiber
Dietary Fiber - pharmacology
Emerging Science
Humans
Nutrition research
Perception
Satiation - drug effects
Studies
Viscosity
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Summary:This review examines the effect of β-glucan, the viscous soluble fiber in oats, on satiety. A literature search for studies that examined delivery of the fiber in whole foods or as an extract was conducted. Viscosity interferes with the peristaltic mixing process in the small intestine to impede digestion and absorption of nutrients, which precipitates satiety signals. From measurements of the physicochemical and rheological properties of β-glucan, it appears that viscosity plays a key role in modulating satiety. However, the lack of standardized methods to measure viscosity and the inherent nature of appetite make it difficult to pinpoint the reasons for inconsistent results of the effects of oats on satiety. Nevertheless, the majority of the evidence suggests that oat β-glucan has a positive effect on perceptions of satiety.
ISSN:0029-6643
1753-4887
DOI:10.1093/nutrit/nuv063