E527 Ammonium Hydroxide – Food Additive
E527 is the food additive ammonium hydroxide, an alkaline compound used as an acidity regulator and leavening agent in various food products.
Things worth knowing about "E527"
E527 is the food additive ammonium hydroxide, an alkaline compound used as an acidity regulator and leavening agent in various food products.
What is E527 (Ammonium Hydroxide)?
E527 is the EU designation for ammonium hydroxide, an aqueous solution of ammonia (NH3) dissolved in water. The solution is weakly alkaline and is used in the food industry as an acidity regulator, leavening agent, and processing aid. Ammonium hydroxide is a naturally occurring compound, as ammonia is a normal byproduct of protein metabolism in both humans and animals.
Chemical Properties
Ammonium hydroxide is a colorless liquid with a characteristically pungent odor. It is an alkaline compound that can neutralize acids and raise the pH of food products. The solution contains ammonia molecules, ammonium ions, and hydroxide ions in equilibrium.
- Chemical formula: NH4OH or NH3 + H2O
- Function: Acidity regulator, leavening agent, processing aid
- Physical state: Aqueous solution (liquid)
- Odor: Pungent, characteristic ammonia smell
Uses in Food
E527 has several applications in food manufacturing:
- Baked goods: Used as a leavening agent in items such as gingerbread, hard biscuits, and certain crackers, often alongside other leavening agents
- Cocoa and chocolate products: Used to alkalize cocoa powder in the Dutch-process method, which softens the flavor and deepens the color
- Processed cheese: Used as a processing aid to help regulate pH and texture
- Meat products: Applied as a processing aid for pH regulation
- Confectionery and caramel: Used to control Maillard browning reactions and flavor development
Regulatory Status and Approval
In the European Union, E527 is approved under Regulation (EC) No 1333/2008 on food additives for use in specific food categories as an acidity regulator and leavening agent. The European Food Safety Authority (EFSA) has assessed the safety of E527 and concluded that it is safe for its intended uses.
In the United States, ammonium hydroxide is classified by the FDA as GRAS (Generally Recognized As Safe) and is permitted for use in a range of food applications.
Safety and Health Assessment
When used as directed in food manufacturing, E527 is considered safe. Key aspects of its safety profile include:
- Residues: Since ammonia is a natural component of many foods and the human metabolic system, small amounts in finished food products are not a concern.
- Volatility: Ammonia is highly volatile and largely evaporates during cooking or baking, leaving minimal residues in the final product.
- Allergies and intolerances: No specific allergic reactions to ammonium hydroxide as a food additive have been documented.
- Concentrated solutions: In its pure or concentrated form, ammonium hydroxide can irritate mucous membranes and the respiratory tract. However, only highly diluted amounts are used in food production.
Labeling Requirements
When E527 is present in a food product in a technologically effective amount, it must be declared on the ingredient list either as E527 or as ammonium hydroxide. If used solely as a processing aid that no longer performs a technological function in the finished product, labeling may not be required under EU law.
Natural Occurrence
Ammonia and ammonium compounds occur naturally in many foods and in the human body. They are produced during the breakdown of proteins and are part of normal nitrogen metabolism. Trace amounts of ammonia can be found in aged cheeses, fermented foods, and certain fish products.
References
- European Commission: Regulation (EC) No 1333/2008 of the European Parliament and of the Council on food additives. Official Journal of the European Union, 2008.
- EFSA Panel on Food Additives and Nutrient Sources (ANS): Re-evaluation of ammonium hydroxide (E 527) as a food additive. EFSA Journal, 2013.
- U.S. Food and Drug Administration (FDA): GRAS Notice Inventory - Ammonium Hydroxide. FDA, USA.
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Related search terms: E527-en