Glucono Delta Lactone (GDL) Glucono Delta Lactone E575 Glucono Delta Lactone (GDL) E575 Glucono Delta Lactone (GDL) is a white, odorless crystalline powder, an acidifier, food additive E575. GDL is able to form complexes with metal ions, thereby enhancing the action of antioxidants. Thanks to the slow release of the acid after mixing with water, it makes possible: precipitation of the protein, i.e. formation/hardening of the gel only after filling, for example, yogurt, tofu, desserts; acidification only after optimal gel formation, e.g. alginate desserts, fish products; stabilization of the consistency of semi-dry raw smoked sausages (up to 5 g/kg of raw meat); obtaining a cooking powder with slow, yeast-like gas formation. Scope: in the production of meat products, in the production of cheese, in the production of cottage cheese, in the production of pizza, in the production of biscuits.