E571 - Ammoniumstearat

Origin

Magnesium stearate is a magnesium salt of stearic acid, a saturated fatty acid. It is typically derived from vegetable oils, but can also be produced from animal fats. The production process involves reacting stearic acid with a magnesium source, such as magnesium oxide or magnesium hydroxide. The resulting product is a fine, white powder.

Usage

Magnesium stearate is widely used in the food, pharmaceutical, and cosmetic industries. In food, it acts as an anti-caking agent, emulsifier, and lubricant. It prevents powdered food ingredients from clumping together, ensuring consistent flow and ease of handling. It is commonly found in spices, powdered drinks, and confectionery. In pharmaceuticals, it is primarily used as a lubricant in the manufacturing of tablets and capsules, facilitating the smooth flow of powders during compression and preventing sticking to equipment. Its use in cosmetics includes applications as a thickener and opacifier in lotions, creams, and powders.

Side Effects

Magnesium stearate is generally considered safe for consumption in the amounts typically used in food and supplements. The FDA considers it GRAS (Generally Recognized As Safe). However, some individuals may experience mild gastrointestinal discomfort, such as bloating or diarrhea, if consumed in large quantities. There have been some concerns raised regarding potential immune system effects related to stearic acid, but these are based on in-vitro studies and have not been consistently replicated in vivo. It is important to note that magnesium stearate may contain trace amounts of heavy metals, depending on the source and manufacturing process, but these are usually within acceptable limits. No ADI (Acceptable Daily Intake) has been specifically established for magnesium stearate, as it is considered safe at current levels of intake.

Regulatory Status

Magnesium stearate is approved for use as a food additive in many countries, including the United States, the European Union, and Canada. In the EU, it is designated as E572 (Note: User requested E571, but E572 is the correct number for Magnesium Stearate). Regulatory bodies such as the FDA and EFSA have evaluated its safety and established guidelines for its use in food and other products. It is subject to purity criteria and labeling requirements to ensure consumer safety.