3-Fucosyllactose

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3-Fucosyllactose is a specific trisaccharide that is a prominent Human Milk Oligosaccharide (HMO). It is composed of a galactose unit, a glucose unit, and a fucose unit linked to the third carbon of the glucose. As a non-digestible carbohydrate for infants, 3-fucosyllactose acts as a prebiotic, promoting the growth of beneficial gut bacteria. It is also believed to play a role in inhibiting the adhesion of certain pathogenic bacteria to the intestinal wall.