Xos: Xylo-oligosaccharide

Xylo-oligosaccharide (XOS) is a type of prebiotic fiber. It is typically derived from plant sources like corn cobs or wheat bran. XOS is produced through enzymatic hydrolysis of xylan, a component of plant cell walls.

XOS is added to foods as a prebiotic fiber to support gut health. It can also act as a bulking agent. It is found in various products, including dietary supplements, beverages, and some baked goods.

XOS is generally recognized as safe (GRAS) by the FDA for use in certain food products. As a prebiotic fiber, it is intended to promote the growth of beneficial gut bacteria. JECFA has evaluated XOS and established specifications for its use. While generally considered safe, consuming large amounts of prebiotic fibers may cause digestive discomfort in some individuals.