Beta-glucans are unbranched polysaccharides with a high molecular weight. In oats, these soluble fibres are mainly found in the aleurone layer: the layer of the grain that separates the hull from the endosperm. The aleurone layer remains in the bran after the grain has been milled and is considered to be particularly rich in valuable nutrients such as fibre. Compared to other cereals such as wheat and rye, oats contain a particularly high proportion of these beneficial beta-glucans.
Health claims about oat beta-glucans (gem. EFSA):
Oat beta-glucans contribute to the maintenance of healthy cholesterol levels. A high cholesterol level is one of the risk factors for coronary heart disease. A positive effect can be achieved with a daily intake of at least 3g of oat beta-glucan.