As a prebiotic, xylooligosaccharides are widely used in the health food industry, and they can also be used as moisturizers or low-calorie additives in foods. The by-products of agricultural product processing are rich in xylan resources. Xylo-oligosaccharides are xylooligosaccharides that are obtained by hydrolyzing β-1,4 glycosidic bonds with xylan Chemicalbook as a substrate and are mainly composed of xylobiose, xylotriose, and xylotetraose. mixture. Corncob, bagasse, and rice husk all have high xylan content, which is an ideal natural raw material for the preparation of xylooligosaccharides.