Yeast beta glucan

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What are beta-glucans? Beta-glucans are a type of polysaccharide for which effects on cholesterol, blood glucose, and the immune system have been proposed.

Where are beta-glucans found? They are found in cereals such as oats and barley, in algae, fungi, and yeasts. Their properties are related to their chemical structure, origin, molecular weight, and solubility, beta-glucans from fungi and yeasts (from beer or bread: Saccharomyces cerevisiae) that act on the immune system.

Structure of beta-glucans

Beta-glucans are polysaccharide chains consisting of several glucose units linked together through beta 1-3 and beta 1-4 bonds, with or without branches. The structure of beta-glucans depends on where they come from and determines their health benefits. Oat and barley beta-glucans are composed of unbranched linear chains with beta 1-3 and beta 1-4 bonds, whereas yeast and fungal beta-glucans are composed of linear chains with beta 1-3 bonds and side branches with beta 1-6 adhesives. Therefore, when reference is made to yeast and fungal beta-glucans, they are referred to as beta-1,3/1,6-glucans. The difference between the two is in the length of the branches, which are longer in yeast.

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