What is sodium tripolyphosphate E451i? Understanding the Food Additive
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3 min read
Sodium tripolyphosphate, also known as STPP or E451i, is a synthetic compound produced on a large scale for many industrial and food applications. In the food industry, this ingredient is primarily used as a preservative, moisture retention agent, and emulsifier. It is the sodium salt of the polyphosphate penta-anion and is common in various processed foods.
