Sodium gluconate

Sodium gluconate is the sodium salt of gluconic acid, formed by neutralising gluconic acid with sodium hydroxide or sodium carbonate. In food it acts as a sequestrant and acidity regulator, chelating divalent metal ions such as iron and calcium that could otherwise catalyse oxidation or cause cloudiness in beverages and sauces. It also functions as a mild flavour enhancer and is used as a dietary supplement carrier in products fortified with minerals. Its very mild, slightly sweet taste makes it unobtrusive in most applications.

No numerical JECFA ADI has been assigned to sodium gluconate, reflecting the same basis as for gluconic acid itself: gluconate is a normal human metabolite generated during glucose oxidation, and the body handles dietary intake through routine biochemical pathways without accumulation. Safety reviews across jurisdictions have uniformly found no basis for establishing an upper intake limit at levels used in food.

Sodium gluconate is approved in the EU and across most global food regulatory frameworks for use in beverages, confectionery, dairy products, and processed foods. It is also used extensively in food processing as a cleaning aid and in industrial applications, but food-grade sodium gluconate meets separate purity specifications. On product labels it appears as sodium gluconate or E576. Consumers tracking sodium intake should note that the sodium content contributed by sodium gluconate at typical additive use levels is trivial compared with salt and other sodium-containing ingredients in a normal diet. It presents no identified health concerns under typical dietary conditions.