E511 - Magnesium chloride

Origin

Magnesium chloride (MgCl₂) is a naturally occurring inorganic salt. It is typically obtained from seawater, salt lakes, and underground brine deposits. It can also be produced synthetically by reacting hydrochloric acid with magnesium oxide or magnesium carbonate. The natural sources are often preferred for food-grade applications due to the presence of trace minerals.

Usage

In the food industry, magnesium chloride is used as a firming agent, particularly in tofu production, where it helps to coagulate soy milk proteins. It is also used as a flavor enhancer and as a component of some mineral supplements. In some regions, it is used as a de-icing agent on roads, although this is a different grade than that used in food. It can also be found in infant formula. The amounts used in food are generally considered safe and are regulated to ensure they do not pose a health risk. It is also used in brewing to adjust water chemistry.

Side Effects

Magnesium chloride is generally considered safe for consumption at levels typically found in food. Excessive intake of magnesium salts, including magnesium chloride, can lead to gastrointestinal issues such as diarrhea, abdominal cramping, and nausea. The EFSA (European Food Safety Authority) has not established a specific ADI (Acceptable Daily Intake) for magnesium chloride as a food additive, as magnesium is an essential nutrient, and its intake is regulated through overall dietary guidelines. However, individuals with kidney problems should exercise caution, as they may have difficulty excreting excess magnesium. High doses can lead to hypermagnesemia, which can cause serious health problems, although this is rare from food sources alone.

Regulatory Status

Magnesium chloride is approved for use as a food additive in the European Union (E511) and the United States. Regulations specify the conditions of use and maximum levels allowed in various food products. It is also generally recognized as safe (GRAS) by the FDA (Food and Drug Administration) when used in accordance with good manufacturing practices.