E545 – Ammonium Polyphosphates
StabiliserDescription
E545 is an inorganic polyphosphate salt, synthesized from phosphoric acid and ammonia, serving as an emulsifier, stabilizer, and sequestrant. It functions primarily by binding metal ions, improving texture, and regulating pH.
Notes
Ammonium polyphosphates are synthetic compounds made by combining ammonia with phosphoric acid (derived from phosphate rock) and heating the mixture to create long chains of phosphate molecules linked together. Think of it like connecting phosphate building blocks into a chain - the longer the chain, the more effective the additive becomes at its various jobs in food. This additive works as a multi-talented ingredient that helps keep foods stable and appealing. As an emulsifier, it helps oil and water mix together smoothly in products like processed cheese and meat products. It also acts as a stabilizer to maintain texture and as a sequestrant, which means it grabs onto metal ions that could otherwise cause foods to deteriorate or change color. You'll commonly find it in processed meats, cheese products, and some baked goods. This is a synthetic additive created through industrial processes rather than extracted from natural sources. It's suitable for vegetarians and vegans since it contains no animal-derived ingredients. The additive is considered safe by food regulators when used within approved limits, though people following low-sodium diets should be aware that it contributes to the overall sodium content in processed foods.