INTRODUCTION

Xylose is a sugar that was first isolated from wood, hence its name. Xylose is classified as an aldehyde spray monosaccharide, which means it contains five carbon atoms and includes one aldehyde functional group. It comes from hemicellulose, which is one of the main components of biomass. Like most sugars, it can adopt multiple structures according to conditions. With its free aldehyde group, it is a reducing sugar，A calorie free sweetener. For obesity and diabetes. It is also used to prevent fat oxidation dosage, produce caramel raw materials through Maillard reaction, and prepare spices such as pork.

Xylose has a high proliferative effect on human intestinal bifidobacteria, and consuming it can improve the microbial environment of the body. Enhance the body's immune system. Xylose has good compatibility with food, and adding a small amount of food xylose can demonstrate good health effects. The simultaneous intake of xylose and calcium can improve the body's absorption and retention of calcium, as well as prevent constipation.