What is E577?
E577 is Potassium gluconate, a food additive used as an acidity regulator. No animal source.
Also written as: INS 577, E-577, E 577. INS is the international numbering system used outside Europe, including on labels in Asia, Australia and the Middle East.
What to do
No action needed for this additive. Check the rest of the ingredient list, and remember that meat products still need proper halal slaughter.
Is E577 vegetarian or vegan?
Yes. E577 (Potassium gluconate) is normally made from plant, mineral, microbial or synthetic sources, so it is suitable for vegetarians and vegans.
Why we classify it this way
Halal No animal source.
Basis: No concern found. Made from plants, minerals, fermentation or synthesis, or from a permitted animal product. Nothing in normal production raises a pork, alcohol, insect or slaughter question.
No external reference is listed for this record yet.
Classification audited 3 November 2026. It has not been reviewed by a scholar. How classifications work · Suggest a correction
Frequently asked questions
Is E577 halal?
E577 (Potassium gluconate) is halal. No animal source.
What is E577 made from?
Gluconic acid (fermentation).
What is E577 used for?
E577 is used as an acidity regulator, typically in soft drinks, sweets, jams, sauces and processed foods.
What should I do if a product contains E577?
No action needed for this additive. Check the rest of the ingredient list, and remember that meat products still need proper halal slaughter.
Is E577 vegetarian or vegan?
Yes. E577 (Potassium gluconate) is normally made from plant, mineral, microbial or synthetic sources, so it is suitable for vegetarians and vegans.