E280 – Propionic acid
PreservativeDescription
Preservative; colorless, oily liquid with a pungent odor
Notes
Propionic acid is a naturally occurring organic acid that can be found in small amounts in dairy products and is produced by bacteria during cheese aging. Commercially, it's made through chemical synthesis or bacterial fermentation, resulting in a colorless, oily liquid with a sharp, vinegar-like smell. The acid gets its name from the Greek word 'protos' meaning first, as it was one of the first organic acids to be discovered. This additive works as a preservative, specifically targeting mold and some bacteria that can spoil food. It's particularly effective at preventing the fuzzy molds that can grow on baked goods, and you'll commonly find it used in bread, cakes, pastries, and other baked products. It can also be found in some processed cheeses and animal feed. Propionic acid is considered both natural (since it occurs in nature) and synthetic (when commercially produced). It's suitable for vegetarian and vegan diets, and there are no specific religious dietary restrictions associated with it. The additive is generally recognized as safe by food authorities worldwide, though some people may be sensitive to it in large amounts. It's been used in food preservation for decades and is well-studied.