Glucose is easily absorbed into the blood, so hospital staff, sports enthusiasts and ordinary people often use it as a powerful and rapid energy supplement.

Gluconic acid δ-lactone, named delta-Gluconolactone in English, or GDL for short, is made by oxidizing glucose into gluconic acid or its salt, and then purifying, desalting, decoloring, concentrating and crystallizing. Used as coagulant, stabilizer, souring agent, preservative and preservative in food industry, it is a multifunctional food additive.