Frequently Asked Questions
1. What does Advance Inorganics offer as a Glucono-Delta-Lactone (GDL) manufacturer?
Advance Inorganics provides high-purity, food-grade Glucono-Delta-Lactone (GDL) suitable for a range of applications, including food, beverages, dairy, and industrial uses, with strict quality controls and reliable delivery.
2. What is Glucono-Delta-Lactone (GDL)?
GDL (also known as G dL or gluconolactone) is an oxidized derivative of glucose (molecular formula C₆H₁₀O₆, melting point ~150–153 °C). It is a white, odorless, crystalline powder that hydrolyzes into gluconic acid in water.
3. How is GDL produced?
Commercially, GDL is produced via enzymatic oxidation of glucose (often by glucose oxidase), generating gluconic acid, which equilibrates to form glucono-delta-lactone.
4. What are the main uses of GDL in food and other industries?
GDL serves multiple roles including acidifier, leavening agent (slow CO₂ release), curing/pickling agent, coagulant (e.g., in tofu, cheese), sequestrant, pH regulator, and buffering agent in bakery, dairy, meat, and beverage products.
5. Is GDL recognized as safe for food use?
Yes. GDL is classified as Generally Recognized As Safe (GRAS) in the U.S. (FDA) and approved as a food additive (E575) in Europe and by other international bodies, with usage allowed under the “quantum satis” principle (i.e., no set limit beyond Good Manufacturing Practice).
6. What are the functional benefits of GDL in food processing?
GDL offers controlled acidification and slow-release leavening (enhanced texture and crumb in baked goods), even coagulation in dairy or tofu, mild flavor modification, and effective pH control.
7. Are there industrial or non-food applications for GDL?
Yes—GDL is used in industrial applications such as adhesives, sealants, metal treatment, construction materials, laboratory chemicals, water treatment, and personal care products as a chelating, humectant, or pH-regulating agent.
8. What are the physical and chemical properties of GDL?
GDL is a water-soluble solid (solubility ~590 g/L), with low volatility. Its hydrolysis to gluconic acid accelerates with heat and higher pH.
9. Is GDL considered environmentally safe and low-hazard?
Yes. According to the U.S. EPA, GDL is designated as a low-priority substance—evidence shows minimal environmental exposure or bioaccumulation concerns, with high biodegradability and low toxicity.
10. How can I purchase Glucono-Delta-Lactone from Advance Inorganics?
You can request a quote, ask for samples, and explore packaging or delivery options by contacting their sales team via the product page.

