E470B – Magnesium stearate
StabiliserDescription
Magnesium salt of stearic acid, a white, fine powder, insoluble in water
Notes
Magnesium stearate is created by combining stearic acid (a fatty acid found naturally in animal fats and plant oils like cocoa butter and shea butter) with magnesium, an essential mineral. The manufacturing process involves mixing stearic acid with a magnesium source, typically magnesium oxide or magnesium hydroxide, which creates a reaction that forms magnesium stearate as a fine, white powder. This process can use stearic acid from either plant or animal sources. As an emulsifier and anti-caking agent, magnesium stearate helps prevent ingredients from sticking together and ensures smooth mixing of different components in food products. You'll find it in powdered foods, spice blends, dietary supplements, candy, and various processed foods where it keeps powders flowing freely and prevents clumping. It also helps create smooth textures in chocolate and other confectionery products by improving how fats and other ingredients combine. Magnesium stearate can be derived from either plant or animal sources, so vegetarians and vegans should check with manufacturers if this is a concern, as the source isn't always specified on labels. Those following halal or kosher diets may also want to verify the source. The ingredient is widely approved for food use and considered safe, though some people prefer to minimize highly processed additives in their diet. It doesn't contain common allergens but is part of the broader category of processed food additives.