Aluminium Sodium Sulfate (E521)
| Type of additive (Glossary) | Acidity Regulators Firming Agents |
| E Number | E521 |
| Chemical Formula | NaAl(SO4)2·12H2O |
| Also Known As | Sodium alum Soda alum |
Purpose and Function
Aluminium sodium sulfate is commonly used as a food additive for its functional properties:
- Firming Agent: It helps maintain the firmness of fruits and vegetables during processing.
- Acidity Regulator: This additive can also help regulate acidity levels in food products.
- Improves Texture: It enhances the texture of food products by providing a crispness to pickled foods.
- Clarifying Agent: Often used in water treatment, it can clarify juices and other liquids by promoting coagulation.
Potential Risks and Side Effects
Aluminium sodium sulfate is generally regarded as safe for consumption. However, some considerations include:
- Gastrointestinal Issues: Excessive intake may lead to gastrointestinal discomfort, including bloating or gas, particularly for those sensitive to aluminium.
- Allergic Reactions: Rarely, individuals may experience allergic reactions to aluminium sodium sulfate, particularly those with sensitivities to aluminium compounds.
- Contaminants: Sourcing from reputable suppliers is essential to minimize the risk of contaminants in food formulations.