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E451 Potassium and sodium tri-phosphates

E451 (i) Penta sodium tri phosphate (formerly designated E450b(i))
E451(ii) Penta potassium tri phosphate (E450b(ii))

Origin:
Salts of sodium/potassium with phosphates. All are produced synthetically from the respective carbonates and phosphoric acid.

Function & characteristics:
Buffers, stabiliser and emulsifiers. Also used to retain water during processing.

Products:
Many different products.

Acceptable Daily Intake:
Up to 70 mg/kg bodyweight for all phosphate containing additives

Side effects:
None known when used in foods. High concentrations of phosphates may disturb several metabolic processes as phosphate plays an important role in general metabolism.

Dietary restrictions:
E451 can be consumed by all religious groups, vegans and vegetarians.