E558 — Bentonite

Bentonite, designated as E558, is a natural clay composed primarily of montmorillonite. It is utilized in the food industry for its anti-caking and emulsifying properties. Additionally, bentonite serves as a clarifying agent in fruit juice production and as a carrier for other additives, such as flavors. 

Danger Level: 0 — Safe

Purpose in Products

In the food industry, bentonite serves several functions:

  • Anti-Caking Agent: Prevents clumping in powdered foods, ensuring free-flowing products.
  • Emulsifier: Assists in blending ingredients that typically do not mix well, such as oil and water.
  • Clarifying Agent: Used in fruit juice production to remove impurities and improve clarity.
  • Carrier for Additives: Acts as a support for other additives, including flavors.

Health Considerations

Bentonite 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 current authorized use and use levels. 

Impact on Children

Bentonite is safe for children when present in food products at the levels typically used in food processing.

Impact on Taste

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

Compatibility with Other Additives

Bentonite is compatible with various other food additives, including sugars and other hydrocolloids. Its water-binding properties make it suitable for use in products requiring moisture retention.

Natural Occurrence

Bentonite is a naturally occurring mineral, primarily composed of montmorillonite, a type of clay.

Alternatives and Substitutes

For those seeking alternatives to E558, options include:

  • Calcium Silicate (E552): Another anti-caking agent used in powdered foods.
  • Magnesium Silicate (E553a): Used as an anti-caking agent in various food products.

Regulation

Bentonite is approved for use as a food additive in many countries, including the European Union, where it is designated as E558. 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

Bentonite (E558) is a versatile and safe food additive used primarily as an anti-caking agent, emulsifier, and clarifying 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.