E923 – Ammonium persulfate
Flour bleaching agentDescription
White crystalline powder
Risks
Irritation; Allergic sensitization
Notes
Ammonium persulfate is a white, crystalline powder created through industrial chemical processes involving ammonia and sulfuric acid compounds. It's manufactured by combining ammonium sulfate with hydrogen peroxide or by electrochemical oxidation of ammonium sulfate solutions. The result is a stable, water-soluble powder that has strong oxidizing properties. This additive functions as both a flour improver and bleaching agent in commercial baking. It whitens flour by breaking down natural pigments and simultaneously strengthens the gluten network, which helps create better texture and volume in baked goods. You'll primarily encounter this in commercially processed flours and baked products like bread, pastries, and other wheat-based items found in supermarkets. Ammonium persulfate is a synthetic chemical compound, not derived from natural sources. It's suitable for vegetarian and vegan diets as it contains no animal products. However, this additive is banned in many countries including those in the European Union due to safety concerns, and some people may experience allergic reactions or respiratory sensitivity to persulfates. It's mainly used in countries where regulatory authorities still permit its use in food processing.