Is Glucono Delta-Lactone (E575) Halal?

Glucono delta-lactone is made by oxidising glucose, usually by fermentation with fungi or bacteria. MUIS lists it as doubtful because the fermentation medium and processing aids vary by manufacturer and are not identified by the E-number. It is used in tofu, cured meats and baking powders.

Glucono-delta-lactone (GDL) is a cyclic ester of gluconic acid prepared by oxidation of glucose. It hydrolyses slowly in water to release gluconic acid, providing a slow, controlled acidification.

• silken tofu (coagulant)
• fresh sausages
• feta cheese
• leavening for biscuits

• Look for a recognised halal certification logo (MUIS, JAKIM, MUI, HMC or similar) on the packaging — certified products have had the source of this additive verified.
• Check whether the label states the origin, for example 'vegetable origin', 'plant-based' or 'soy'.
• If there is no certification and the origin is not stated, contact the manufacturer or choose a product with a halal alternative.

citric acid (E330), lactic acid (E270), fumaric acid (E297)

E575 (Glucono Delta-Lactone) is doubtful for Muslims according to the MUIS food additive listing. Glucono-delta-lactone (GDL) is a cyclic ester of gluconic acid prepared by oxidation of glucose.

Glucono-delta-lactone (GDL) is a cyclic ester of gluconic acid prepared by oxidation of glucose. It hydrolyses slowly in water to release gluconic acid, providing a slow, controlled acidification.

E575 is commonly found in silken tofu (coagulant), fresh sausages, feta cheese, and leavening for biscuits.