E523 - Aluminiumammoniumsulfat

Origin

Aluminium ammonium sulphate, also known as ammonium alum, is an inorganic salt. It is a double salt of aluminium sulphate and ammonium sulphate. It can be produced synthetically by combining aluminium sulphate and ammonium sulphate solutions, followed by crystallization. It occurs naturally as the rare mineral tschermigite.

Usage

Aluminium ammonium sulphate has several applications in the food industry, primarily as a firming agent, acidity regulator, and sometimes as a component of baking powders. It helps to maintain the crispness of pickled vegetables and fruits. In baking, it can contribute to the leavening process. It is also used in water purification, dyeing, and tanning leather. Its astringent properties make it useful in some cosmetic and pharmaceutical applications.

Side Effects

Aluminium compounds, including aluminium ammonium sulphate, have raised concerns regarding potential neurotoxicity and bone health issues, particularly with high levels of exposure. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has established a Tolerable Weekly Intake (TWI) for aluminium from all sources. While aluminium ammonium sulphate is considered relatively safe at typical usage levels in food, excessive consumption of aluminium-containing additives should be avoided. Individuals with kidney problems may be more susceptible to the adverse effects of aluminium accumulation. There is no specific ADI for E523, but it falls under the general safety considerations for aluminium compounds.