Xylo-oligosaccharides from lignocellulosic materials: Chemical structure, health benefits and production by chemical and enzymatic hydrolysis

► Xylan from Lignocelulosic materials are discussed to xylo-oligossacarides production. ► Chemical structure of XOS and its benefits to human and animal health. ► Soluble fibers as substitutes for antibiotics in feed. ► Advantages and limitations of different chemical pretreatments for xylan extraction. ► Parameters of enzymatic reactions for converting xylan in XOS.