E522 — Aluminium Potassium Sulfate

E522, known as aluminium potassium sulfate, is a food additive primarily used as an acidity regulator and firming agent. It is synthesized by combining potassium sulfate with aluminium sulfate. 

Danger Level: 0 — Safe

Purpose in Products

Aluminium potassium sulfate serves several functions in food products:

  • Acidity Regulator: It helps maintain the desired pH levels in food, contributing to flavor enhancement and preservation. 
  • Firming Agent: It enhances the texture and firmness of fruits and vegetables, particularly in canned products.

Health Considerations

Aluminium potassium sulfate is considered safe for consumption when used within established limits. The European Food Safety Authority (EFSA) has evaluated its safety and concluded that it poses no health concerns at the reported uses and use levels. 

Impact on Children

Aluminium potassium sulfate is safe for children when consumed in typical dietary amounts.

Impact on Taste

Aluminium potassium sulfate is tasteless and odorless, making it an ideal ingredient for various food products without altering their flavor profiles.

Compatibility with Other Additives

Aluminium potassium sulfate is compatible with various other food additives, including acidity regulators and firming agents. Its water-binding properties make it suitable for use in products requiring moisture retention.

Natural Occurrence

Aluminium potassium sulfate is a synthetic compound and does not occur naturally in food.

Alternatives and Substitutes

For those seeking alternatives to aluminium potassium sulfate, options include:

  • Calcium Sulfate (E516): Used as a firming agent and acidity regulator in various food products.
  • Magnesium Sulfate (E518): Serves as a firming agent and acidity regulator in food products.

Regulation

Aluminium potassium sulfate is approved for use as a food additive in many countries, including the European Union, where it is designated as E522. Regulatory bodies such as the European Food Safety Authority (EFSA) have evaluated its safety and concluded that it poses no health concerns when used within established limits. 

Conclusion

Aluminium potassium sulfate (E522) is a versatile and safe food additive used primarily as an acidity regulator and firming agent. Its unique properties make it valuable in various food products, enhancing texture and stability. While generally safe, individuals with specific sensitivities should exercise caution.