E520 — Aluminium Sulfate

E520, known as aluminium sulfate, is a food additive primarily used as a firming agent and acidity regulator. It is derived from the reaction of aluminium hydroxide with sulfuric acid. 

Danger Level: 0 — Safe

Purpose in Products

Aluminium sulfate serves several functions in food products:

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

Health Considerations

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

Impact on Taste

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

Compatibility with Other Additives

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

Alternatives and Substitutes

For those seeking alternatives to aluminium 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 sulfate is approved for use as a food additive in many countries, including the European Union, where it is designated as E520. 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 sulfate (E520) is a versatile and safe food additive used primarily as a firming agent and acidity regulator. Its unique properties make it valuable in various food products, enhancing texture and stability. While generally safe, individuals with specific sensitivities should exercise caution.