Food Uses of Aluminum Compounds

Aluminum compounds that may be employed as food additives are listed in Table 1. Although most are present in foods as trace components, others may be present in significant quantities. For example, aluminum-based baking powders, employing sodium aluminum phosfate (SALP), may contain more than 10mgg_1 of aluminum, and bread or cake made with these may contain 5-15 mg of the element per slice. American processed cheese may contain as much as 50 mg of aluminum per slice due to the addition of Kasel, an emulsifying agent. Pickled cucumbers may contain 10 mg of aluminum per fruit when alum has been employed as a firming agent. Aluminum anticaking agents may also be present in significant quantities in common table salt.

Table 1 Permitted aluminum-containing food additives and uses

Compound Use

Aluminum Metallic color for surface

Aluminum ammonium sulfate (ammonium alum) Aluminum potassium sulfate (potassium alum)

Aluminum sodium sulfate

(soda/sodium alum) Aluminum sulfate (alum) Aluminum calcium silicate Aluminum sodium silicate Sodium calcium aluminosilicate Kaolin (contains aluminum oxide) Sodium aluminum phosfate (acidic), SALP Sodium aluminum phosfate (basic), Kasel treatment Acidic compound used as a neutralizing agent and as a buffer

Acidic compound used as a neutralizing agent, a buffer, and a firming agent Buffer, neutralizing agent, and firming agent Firming agent in pickling Anticaking agent for powders Anticaking agent for powders Anticaking agent for powders

Anticaking agent for powders

Acid, raising (leavening) agent for flour Emulsifying salt

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