E576 Magnesium Gluconate – Food Additive Explained
E576 is the EU food additive designation for magnesium gluconate, a salt of gluconic acid. It is used as a firming agent, acidity regulator, and mineral carrier in food products.
Wissenswertes über "E576"
E576 is the EU food additive designation for magnesium gluconate, a salt of gluconic acid. It is used as a firming agent, acidity regulator, and mineral carrier in food products.
What is E576 (Magnesium Gluconate)?
E576 is the official European Union designation for magnesium gluconate, the magnesium salt of gluconic acid. It is an authorised food additive listed under E number 576 within the EU. The substance appears as a white to slightly yellowish powder and is readily soluble in water.
Chemical Properties
Magnesium gluconate is formed by combining magnesium with gluconic acid, a naturally occurring organic acid typically produced through microbial fermentation of glucose. Its chemical formula is C12H22MgO14. Compared to other magnesium compounds, magnesium gluconate is considered to be particularly gentle on the stomach and gastrointestinal tract.
Use as a Food Additive
In the food industry, E576 serves several technological functions:
- Firming agent: Helps maintain the texture, firmness, and crispness of processed fruit and vegetable products.
- Acidity regulator: Used to adjust and stabilise the pH level in various food products.
- Mineral carrier: Acts as a source of magnesium for food fortification and dietary supplements.
- Processing aid: Functions as an anti-caking agent and technological processing aid in various food categories.
Magnesium Gluconate as a Dietary Supplement
Beyond its role as a food additive, magnesium gluconate is widely used in dietary supplements to meet the body's magnesium requirements. Magnesium is an essential mineral involved in more than 300 enzymatic reactions in the human body. It plays a key role in:
- Normal muscle and nerve function
- Energy production (ATP synthesis)
- Maintaining healthy bones and teeth
- Regulating electrolyte balance
- Supporting normal protein synthesis
The bioavailability of magnesium gluconate is considered good to very good, as organic magnesium salts are generally absorbed more efficiently than inorganic compounds such as magnesium oxide.
Safety and Tolerability
E576 is considered safe when used as intended. The European Food Safety Authority (EFSA) has evaluated magnesium gluconate as a safe additive. No specific Acceptable Daily Intake (ADI) has been established, as the substance is classified as non-hazardous under normal use conditions. However, very high doses of magnesium can have a laxative effect and may cause diarrhoea. Individuals with impaired kidney function should consult a healthcare professional before taking high-dose magnesium supplements.
Authorisation and Labelling
In the European Union, E576 is authorised under Regulation (EC) No 1333/2008 on food additives. Food products containing this additive must declare it in the ingredient list either as E576 or as magnesium gluconate.
References
- European Food Safety Authority (EFSA): Re-evaluation of glucono delta-lactone (E 575), potassium gluconate (E 577), calcium gluconate (E 578) and magnesium gluconate (E 580) as food additives. EFSA Journal, 2019.
- Regulation (EC) No 1333/2008 of the European Parliament and of the Council of 16 December 2008 on food additives.
- Rude RK: Magnesium. In: Ross AC, Caballero B, Cousins RJ, Tucker KL, Ziegler TR, eds. Modern Nutrition in Health and Disease. 11th edition. Baltimore: Lippincott Williams and Wilkins; 2012:159-175.
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