calciumpropionaat

Calciumpropionaat, also known as calcium propanoate, is the calcium salt of propionic acid. Its chemical formula is Ca(C3H5O2)2 and its approximate molecular weight is 186 g/mol. It appears as a white, crystalline powder that is soluble in water. It is widely used as a food preservative and mold inhibitor, commonly added to bakery products such as bread and pastries to extend shelf life, and also used in dairy products and processed foods. In animal nutrition, calcium propionate serves as a feed additive to prevent mold growth on stored feeds and silage.

Mechanism and properties: Calcium propionate inhibits the growth of molds and some bacteria by releasing propionic acid in acidic environments, which disrupts microbial metabolism. It is relatively heat-stable and remains active under typical processing conditions, contributing to its effectiveness in baked goods and other products.

Regulation and safety: It is approved for use as a food additive in many jurisdictions and is assigned the E-number E282 in the European Union. In foods, it is used within regulated levels; the substance is generally regarded as safe (GRAS) in appropriate amounts. Exposure to high concentrations of the dry powder or concentrated solutions can irritate the eyes, skin, or respiratory tract, so proper handling is advised.

Synthesis: Calcium propionate is produced by neutralizing propionic acid with calcium compounds (such as calcium hydroxide or calcium carbonate) or by reacting calcium salts with propionate.