L-(-)-Xylose is primarily used in the food and beverage industry as a low-calorie sweetener. It is often incorporated into sugar-free or reduced-sugar products, such as chewing gum, candies, and baked goods, due to its ability to provide sweetness without significantly impacting blood glucose levels. This makes it a suitable option for diabetic-friendly foods. Additionally, it is utilized in the production of xylitol, a popular sugar alcohol used in oral care products like toothpaste and mouthwash for its anti-cavity properties. In the pharmaceutical sector, L-(-)-Xylose serves as a diagnostic agent in the xylose absorption test, which helps assess intestinal absorption and diagnose malabsorption disorders. Its role in biotechnology includes being a substrate for microbial fermentation processes to produce biofuels and other valuable chemicals.